220021111100100 has 36 divisors (see below), whose sum is σ = 636594414783824. Its totient is φ = 58672296293280.

The previous prime is 220021111100071. The next prime is 220021111100143. The reversal of 220021111100100 is 1001111120022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366701851534 + ... + 366701852133.

Almost surely, 2^{220021111100100} is an apocalyptic number.

220021111100100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220021111100100 is an abundant number, since it is smaller than the sum of its proper divisors (416573303683724).

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

220021111100100 is a wasteful number, since it uses less digits than its factorization.

220021111100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733403703684 (or 733403703677 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 220021111100100 its reverse (1001111120022), we get a palindrome (221022222220122).

The spelling of 220021111100100 in words is "two hundred twenty trillion, twenty-one billion, one hundred eleven million, one hundred thousand, one hundred".