220111122122220 has 144 divisors (see below), whose sum is σ = 716978127948768. Its totient is φ = 50307972664320.

The previous prime is 220111122122219. The next prime is 220111122122251. The reversal of 220111122122220 is 22221221111022.

220111122122220 is digitally balanced in base 2, 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 (21).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44925630 + ... + 49583610.

It is an arithmetic number, because the mean of its divisors is an integer number (4979014777422).

Almost surely, 2^{220111122122220} is an apocalyptic number.

220111122122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220111122122220 is an abundant number, since it is smaller than the sum of its proper divisors (496867005826548).

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

220111122122220 is a wasteful number, since it uses less digits than its factorization.

220111122122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4674080 (or 4674071 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 220111122122220 its reverse (22221221111022), we get a palindrome (242332343233242).

The spelling of 220111122122220 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty".