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2220201222012 = 22322910037211879
BaseRepresentation
bin100000010011101110010…
…011100001111101111100
321212020201122021221102100
4200103232103201331330
5242333433003101022
64415540225225100
7316255441003044
oct40235623417574
97766648257370
102220201222012
11786644789094
122ba358a92190
13131496b52747
147965b876724
153cb44bb91ac
hex204ee4e1f7c

2220201222012 has 72 divisors (see below), whose sum is σ = 5806304431200. Its totient is φ = 714472956288.

The previous prime is 2220201221971. The next prime is 2220201222049. The reversal of 2220201222012 is 2102221020222.

It is a super-2 number, since 2×22202012220122 (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10372689 + ... + 10584567.

It is an arithmetic number, because the mean of its divisors is an integer number (80643117100).

Almost surely, 22220201222012 is an apocalyptic number.

It is an amenable number.

2220201222012 is an abundant number, since it is smaller than the sum of its proper divisors (3586103209188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2220201222012 is a wasteful number, since it uses less digits than its factorization.

2220201222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221955 (or 221950 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2220201222012 its reverse (2102221020222), we get a palindrome (4322422242234).

The spelling of 2220201222012 in words is "two trillion, two hundred twenty billion, two hundred one million, two hundred twenty-two thousand, twelve".

Divisors: 1 2 3 4 6 9 12 18 29 36 58 87 116 174 261 348 522 1044 10037 20074 30111 40148 60222 90333 120444 180666 211879 291073 361332 423758 582146 635637 847516 873219 1164292 1271274 1746438 1906911 2542548 2619657 3492876 3813822 5239314 6144491 7627644 10478628 12288982 18433473 24577964 36866946 55300419 73733892 110600838 221201676 2126629523 4253259046 6379888569 8506518092 12759777138 19139665707 25519554276 38279331414 61672256167 76558662828 123344512334 185016768501 246689024668 370033537002 555050305503 740067074004 1110100611006 2220201222012