111112221010 has 32 divisors (see below), whose sum is σ = 228601763712. Its totient is φ = 38090943360.

The previous prime is 111112220993. The next prime is 111112221043. The reversal of 111112221010 is 10122211111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503329 + ... + 689611.

It is an arithmetic number, because the mean of its divisors is an integer number (7143805116).

Almost surely, 2^111112221010 is an apocalyptic number.

111112221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111112221010 is an abundant number, since it is smaller than the sum of its proper divisors (117489542702).

111112221010 is a wasteful number, since it uses less digits than its factorization.

111112221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194818.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111112221010 its reverse (10122211111), we get a palindrome (121234432121).

The spelling of 111112221010 in words is "one hundred eleven billion, one hundred twelve million, two hundred twenty-one thousand, ten".