220120222100 has 18 divisors (see below), whose sum is σ = 477660882174. Its totient is φ = 88048088800.

The previous prime is 220120222099. The next prime is 220120222151. The reversal of 220120222100 is 1222021022.

It can be written as a sum of positive squares in 3 ways, for example, as 20376196 + 220099845904 = 4514^2 + 469148^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1100601011 + ... + 1100601210.

Almost surely, 2^220120222100 is an apocalyptic number.

220120222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220120222100 is an abundant number, since it is smaller than the sum of its proper divisors (257540660074).

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

220120222100 is a wasteful number, since it uses less digits than its factorization.

220120222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201202235 (or 2201202228 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220120222100 its reverse (1222021022), we get a palindrome (221342243122).

The spelling of 220120222100 in words is "two hundred twenty billion, one hundred twenty million, two hundred twenty-two thousand, one hundred".