111021132220 has 12 divisors (see below), whose sum is σ = 233144377704. Its totient is φ = 44408452880.

The previous prime is 111021132193. The next prime is 111021132307. The reversal of 111021132220 is 22231120111.

It is a junction number, because it is equal to n+sod(n) for n = 111021132194 and 111021132203.

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 3 ways as a sum of consecutive naturals, for example, 2775528286 + ... + 2775528325.

It is an arithmetic number, because the mean of its divisors is an integer number (19428698142).

Almost surely, 2^111021132220 is an apocalyptic number.

111021132220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021132220 is an abundant number, since it is smaller than the sum of its proper divisors (122123245484).

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

111021132220 is a wasteful number, since it uses less digits than its factorization.

111021132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551056620 (or 5551056618 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111021132220 its reverse (22231120111), we get a palindrome (133252252331).

The spelling of 111021132220 in words is "one hundred eleven billion, twenty-one million, one hundred thirty-two thousand, two hundred twenty".