111021132122220 has 96 divisors (see below), whose sum is σ = 319736581097472. Its totient is φ = 28767302258688.

The previous prime is 111021132122191. The next prime is 111021132122233. The reversal of 111021132122220 is 22221231120111.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110982492 + ... + 111978371.

It is an arithmetic number, because the mean of its divisors is an integer number (3330589386432).

Almost surely, 2^{111021132122220} is an apocalyptic number.

111021132122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021132122220 is an abundant number, since it is smaller than the sum of its proper divisors (208715448975252).

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

111021132122220 is a wasteful number, since it uses less digits than its factorization.

111021132122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222961111 (or 222961109 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 111021132122220 its reverse (22221231120111), we get a palindrome (133242363242331).

The spelling of 111021132122220 in words is "one hundred eleven trillion, twenty-one billion, one hundred thirty-two million, one hundred twenty-two thousand, two hundred twenty".