111220113210 has 16 divisors (see below), whose sum is σ = 266928271776. Its totient is φ = 29658696848.

The previous prime is 111220113187. The next prime is 111220113233. The reversal of 111220113210 is 12311022111.

It is an interprime number because it is at equal distance from previous prime (111220113187) and next prime (111220113233).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111220113210.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853668524 + ... + 1853668583.

It is an arithmetic number, because the mean of its divisors is an integer number (16683016986).

Almost surely, 2^111220113210 is an apocalyptic number.

111220113210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111220113210 is an abundant number, since it is smaller than the sum of its proper divisors (155708158566).

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

111220113210 is a wasteful number, since it uses less digits than its factorization.

111220113210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707337117.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111220113210 its reverse (12311022111), we get a palindrome (123531135321).

The spelling of 111220113210 in words is "one hundred eleven billion, two hundred twenty million, one hundred thirteen thousand, two hundred ten".