111212010012012 has 72 divisors (see below), whose sum is σ = 325081260057456. Its totient is φ = 29330640001152.

The previous prime is 111212010012007. The next prime is 111212010012031. The reversal of 111212010012012 is 210210010212111.

It is a happy number.

It is a super-2 number, since 2×111212010012012² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111212010011982 and 111212010012000.

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, 7274456643 + ... + 7274471930.

It is an arithmetic number, because the mean of its divisors is an integer number (4515017500798).

Almost surely, 2^{111212010012012} is an apocalyptic number.

111212010012012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111212010012012 is an abundant number, since it is smaller than the sum of its proper divisors (213869250045444).

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

111212010012012 is a wasteful number, since it uses less digits than its factorization.

111212010012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14548928607 (or 14548928598 counting only the distinct ones).

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

Adding to 111212010012012 its reverse (210210010212111), we get a palindrome (321422020224123).

The spelling of 111212010012012 in words is "one hundred eleven trillion, two hundred twelve billion, ten million, twelve thousand, twelve".