220021100120 has 32 divisors (see below), whose sum is σ = 495994075920. Its totient is φ = 87840155520.

The previous prime is 220021100099. The next prime is 220021100149. The reversal of 220021100120 is 21001120022.

It is a happy number.

220021100120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5237711 + ... + 5279550.

Almost surely, 2^220021100120 is an apocalyptic number.

220021100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220021100120 is an abundant number, since it is smaller than the sum of its proper divisors (275972975800).

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

220021100120 is a wasteful number, since it uses less digits than its factorization.

220021100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10517795 (or 10517791 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220021100120 its reverse (21001120022), we get a palindrome (241022220142).

The spelling of 220021100120 in words is "two hundred twenty billion, twenty-one million, one hundred thousand, one hundred twenty".