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2201201212 = 22797810457
BaseRepresentation
bin1000001100110011…
…1010101000111100
312200101221121101211
42003030322220330
514002001414322
61002231214204
7105355621150
oct20314725074
95611847354
102201201212
11a2a580061
12515217364
13291062332
1416c4b1060
15cd3a7b77
hex8333aa3c

2201201212 has 24 divisors (see below), whose sum is σ = 4447793504. Its totient is φ = 933645312.

The previous prime is 2201201209. The next prime is 2201201213. The reversal of 2201201212 is 2121021022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2201201192 and 2201201201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201201213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402513 + ... + 407944.

Almost surely, 22201201212 is an apocalyptic number.

It is an amenable number.

2201201212 is an abundant number, since it is smaller than the sum of its proper divisors (2246592292).

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

2201201212 is a wasteful number, since it uses less digits than its factorization.

2201201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810565 (or 810563 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2201201212 is about 46916.9608137612. The cubic root of 2201201212 is about 1300.8281137908.

Adding to 2201201212 its reverse (2121021022), we get a palindrome (4322222234).

The spelling of 2201201212 in words is "two billion, two hundred one million, two hundred one thousand, two hundred twelve".

Divisors: 1 2 4 7 14 28 97 194 388 679 1358 2716 810457 1620914 3241828 5673199 11346398 22692796 78614329 157228658 314457316 550300303 1100600606 2201201212