111220111111010 has 64 divisors (see below), whose sum is σ = 225703333785600. Its totient is φ = 39093477508800.

The previous prime is 111220111111009. The next prime is 111220111111019. The reversal of 111220111111010 is 10111111022111.

It is a super-3 number, since 3×111220111111010³ (a number of 43 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (111220111111019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16055600 + ... + 21913979.

It is an arithmetic number, because the mean of its divisors is an integer number (3526614590400).

Almost surely, 2^{111220111111010} is an apocalyptic number.

111220111111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111220111111010 is an abundant number, since it is smaller than the sum of its proper divisors (114483222674590).

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

111220111111010 is a wasteful number, since it uses less digits than its factorization.

111220111111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37970487.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 111220111111010 its reverse (10111111022111), we get a palindrome (121331222133121).

The spelling of 111220111111010 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred eleven million, one hundred eleven thousand, ten".