111031213122 has 12 divisors (see below), whose sum is σ = 240567628470. Its totient is φ = 37010404368.

The previous prime is 111031213099. The next prime is 111031213133. The reversal of 111031213122 is 221312130111.

It can be written as a sum of positive squares in only one way, i.e., 89304747921 + 21726465201 = 298839^2 + 147399^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6168400729 = 111031213122 / (1 + 1 + 1 + 0 + 3 + 1 + 2 + 1 + 3 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 111031213095 and 111031213104.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3084200347 + ... + 3084200382.

Almost surely, 2^111031213122 is an apocalyptic number.

111031213122 is an abundant number, since it is smaller than the sum of its proper divisors (129536415348).

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

111031213122 is a wasteful number, since it uses less digits than its factorization.

111031213122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6168400737 (or 6168400734 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111031213122 its reverse (221312130111), we get a palindrome (332343343233).

The spelling of 111031213122 in words is "one hundred eleven billion, thirty-one million, two hundred thirteen thousand, one hundred twenty-two".