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12020202111020 = 2251394323813709
BaseRepresentation
bin1010111011101010101111…
…1000001000000000101100
31120120010020112220200020112
42232322223320020000230
53033414333220023040
641322000555235152
72350300546065245
oct256725370100054
946503215820215
1012020202111020
1139148147a8924
121421719448ab8
13692666c1062c
142d7ad0a75ccc
1515ca167b1365
hexaeeabe0802c

12020202111020 has 24 divisors (see below), whose sum is σ = 25424024614800. Its totient is φ = 4773490333632.

The previous prime is 12020202110981. The next prime is 12020202111041. The reversal of 12020202111020 is 2011120202021.

It is a junction number, because it is equal to n+sod(n) for n = 12020202110986 and 12020202111004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2161904075 + ... + 2161909634.

It is an arithmetic number, because the mean of its divisors is an integer number (1059334358950).

Almost surely, 212020202111020 is an apocalyptic number.

12020202111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020202111020 is an abundant number, since it is smaller than the sum of its proper divisors (13403822503780).

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

12020202111020 is a wasteful number, since it uses less digits than its factorization.

12020202111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4323813857 (or 4323813855 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12020202111020 its reverse (2011120202021), we get a palindrome (14031322313041).

The spelling of 12020202111020 in words is "twelve trillion, twenty billion, two hundred two million, one hundred eleven thousand, twenty".

Divisors: 1 2 4 5 10 20 139 278 556 695 1390 2780 4323813709 8647627418 17295254836 21619068545 43238137090 86476274180 601010105551 1202020211102 2404040422204 3005050527755 6010101055510 12020202111020