111210112221012 has 144 divisors (see below), whose sum is σ = 333664110823680. Its totient is φ = 30568186446336.

The previous prime is 111210112220953. The next prime is 111210112221059. The reversal of 111210112221012 is 210122211012111.

It is a happy number.

111210112221012 is a `hidden beast` number, since 111 + 210 + 1 + 122 + 210 + 12 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66177448 + ... + 67837119.

It is an arithmetic number, because the mean of its divisors is an integer number (2317111880720).

Almost surely, 2^{111210112221012} is an apocalyptic number.

111210112221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111210112221012 is an abundant number, since it is smaller than the sum of its proper divisors (222453998602668).

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

111210112221012 is a wasteful number, since it uses less digits than its factorization.

111210112221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134014710 (or 134014705 counting only the distinct ones).

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

Adding to 111210112221012 its reverse (210122211012111), we get a palindrome (321332323233123).

The spelling of 111210112221012 in words is "one hundred eleven trillion, two hundred ten billion, one hundred twelve million, two hundred twenty-one thousand, twelve".