111022101211212 has 72 divisors (see below), whose sum is σ = 296493359198400. Its totient is φ = 34971011566848.

The previous prime is 111022101211159. The next prime is 111022101211247. The reversal of 111022101211212 is 212112101220111.

It is a happy number.

111022101211212 is a `hidden beast` number, since 1 + 110 + 221 + 0 + 121 + 1 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 1131259537 + ... + 1131357672.

It is an arithmetic number, because the mean of its divisors is an integer number (4117963322200).

Almost surely, 2^{111022101211212} is an apocalyptic number.

111022101211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111022101211212 is an abundant number, since it is smaller than the sum of its proper divisors (185471257987188).

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

111022101211212 is a wasteful number, since it uses less digits than its factorization.

111022101211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262617295 (or 2262617290 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111022101211212 its reverse (212112101220111), we get a palindrome (323134202431323).

The spelling of 111022101211212 in words is "one hundred eleven trillion, twenty-two billion, one hundred one million, two hundred eleven thousand, two hundred twelve".