111011212220 has 24 divisors (see below), whose sum is σ = 245393206800. Its totient is φ = 42067406592.

The previous prime is 111011212159. The next prime is 111011212229. The reversal of 111011212220 is 22212110111.

It is a super-5 number, since 5×111011212220⁵ (a number of 56 digits) contains 55555 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111011212195 and 111011212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111011212229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146067005 + ... + 146067764.

It is an arithmetic number, because the mean of its divisors is an integer number (10224716950).

Almost surely, 2^111011212220 is an apocalyptic number.

111011212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111011212220 is an abundant number, since it is smaller than the sum of its proper divisors (134381994580).

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

111011212220 is a wasteful number, since it uses less digits than its factorization.

111011212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292134797 (or 292134795 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111011212220 its reverse (22212110111), we get a palindrome (133223322331).

The spelling of 111011212220 in words is "one hundred eleven billion, eleven million, two hundred twelve thousand, two hundred twenty".