111112121010 has 64 divisors (see below), whose sum is σ = 293792137344. Its totient is φ = 26669568000.

The previous prime is 111112120993. The next prime is 111112121077. The reversal of 111112121010 is 10121211111.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1633519 + ... + 1700178.

It is an arithmetic number, because the mean of its divisors is an integer number (4590502146).

Almost surely, 2^111112121010 is an apocalyptic number.

111112121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111112121010 is an abundant number, since it is smaller than the sum of its proper divisors (182680016334).

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

111112121010 is a wasteful number, since it uses less digits than its factorization.

111112121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333819.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111112121010 its reverse (10121211111), we get a palindrome (121233332121).

It can be divided in two parts, 1111 and 12121010, that added together give a palindrome (12122121).

The spelling of 111112121010 in words is "one hundred eleven billion, one hundred twelve million, one hundred twenty-one thousand, ten".