111010021205 has 32 divisors (see below), whose sum is σ = 142012362240. Its totient is φ = 83061840960.

The previous prime is 111010021159. The next prime is 111010021217. The reversal of 111010021205 is 502120010111.

It is not a de Polignac number, because 111010021205 - 2¹⁴ = 111010004821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111010021205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13581770 + ... + 13589940.

It is an arithmetic number, because the mean of its divisors is an integer number (4437886320).

Almost surely, 2^111010021205 is an apocalyptic number.

It is an amenable number.

111010021205 is a deficient number, since it is larger than the sum of its proper divisors (31002341035).

111010021205 is a wasteful number, since it uses less digits than its factorization.

111010021205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001.

The product of its (nonzero) digits is 20, while the sum is 14.

Adding to 111010021205 its reverse (502120010111), we get a palindrome (613130031316).

The spelling of 111010021205 in words is "one hundred eleven billion, ten million, twenty-one thousand, two hundred five".