111201021012012 has 24 divisors (see below), whose sum is σ = 259539005737200. Its totient is φ = 37057013188416.

The previous prime is 111201021012007. The next prime is 111201021012017. The reversal of 111201021012012 is 210210120102111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111201021012007) and next prime (111201021012017).

It is a super-2 number, since 2×111201021012012² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111201021011982 and 111201021012000.

It is not an unprimeable number, because it can be changed into a prime (111201021012017) 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, 1249180587 + ... + 1249269602.

It is an arithmetic number, because the mean of its divisors is an integer number (10814125239050).

Almost surely, 2^{111201021012012} is an apocalyptic number.

111201021012012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111201021012012 is an abundant number, since it is smaller than the sum of its proper divisors (148337984725188).

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

111201021012012 is a wasteful number, since it uses less digits than its factorization.

111201021012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498453905 (or 2498453903 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111201021012012 its reverse (210210120102111), we get a palindrome (321411141114123).

Subtracting 111201021012012 from its reverse (210210120102111), we obtain a palindrome (99009099090099).

The spelling of 111201021012012 in words is "one hundred eleven trillion, two hundred one billion, twenty-one million, twelve thousand, twelve".