111202211220 has 24 divisors (see below), whose sum is σ = 311366191584. Its totient is φ = 29653922976.

The previous prime is 111202211213. The next prime is 111202211243. The reversal of 111202211220 is 22112202111.

111202211220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 111202211220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926685034 + ... + 926685153.

It is an arithmetic number, because the mean of its divisors is an integer number (12973591316).

Almost surely, 2^111202211220 is an apocalyptic number.

111202211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111202211220 is an abundant number, since it is smaller than the sum of its proper divisors (200163980364).

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

111202211220 is a wasteful number, since it uses less digits than its factorization.

111202211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853370199 (or 1853370197 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111202211220 its reverse (22112202111), we get a palindrome (133314413331).

The spelling of 111202211220 in words is "one hundred eleven billion, two hundred two million, two hundred eleven thousand, two hundred twenty".