111111110011212 has 96 divisors (see below), whose sum is σ = 267785406266112. Its totient is φ = 35830848450816.

The previous prime is 111111110011199. The next prime is 111111110011219. The reversal of 111111110011212 is 212110011111111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111111110011191 and 111111110011200.

It is not an unprimeable number, because it can be changed into a prime (111111110011219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77196043 + ... + 78622205.

It is an arithmetic number, because the mean of its divisors is an integer number (2789431315272).

Almost surely, 2^{111111110011212} is an apocalyptic number.

111111110011212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111111110011212 is an abundant number, since it is smaller than the sum of its proper divisors (156674296254900).

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

111111110011212 is a wasteful number, since it uses less digits than its factorization.

111111110011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427207 (or 1427205 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 111111110011212 its reverse (212110011111111), we get a palindrome (323221121122323).

The spelling of 111111110011212 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred ten million, eleven thousand, two hundred twelve".