220221020222100 has 144 divisors (see below), whose sum is σ = 707977600422400. Its totient is φ = 58724958216960.

The previous prime is 220221020222083. The next prime is 220221020222111. The reversal of 220221020222100 is 1222020122022.

220221020222100 is a `hidden beast` number, since 2 + 20 + 221 + 0 + 202 + 221 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 276106077 + ... + 276902523.

Almost surely, 2^{220221020222100} is an apocalyptic number.

220221020222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220221020222100 is an abundant number, since it is smaller than the sum of its proper divisors (487756580200300).

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

220221020222100 is a wasteful number, since it uses less digits than its factorization.

220221020222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898879 (or 898866 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 220221020222100 its reverse (1222020122022), we get a palindrome (221443040344122).

The spelling of 220221020222100 in words is "two hundred twenty trillion, two hundred twenty-one billion, twenty million, two hundred twenty-two thousand, one hundred".