21022220200100 has 72 divisors (see below), whose sum is σ = 52436465393088. Its totient is φ = 7165955779200.

The previous prime is 21022220200013. The next prime is 21022220200117. The reversal of 21022220200100 is 100202222012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86675846 + ... + 86918045.

Almost surely, 2^{21022220200100} is an apocalyptic number.

21022220200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022220200100 is an abundant number, since it is smaller than the sum of its proper divisors (31414245192988).

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

21022220200100 is a wasteful number, since it uses less digits than its factorization.

21022220200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173594085 (or 173594078 counting only the distinct ones).

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

Adding to 21022220200100 its reverse (100202222012), we get a palindrome (21122422422112).

The spelling of 21022220200100 in words is "twenty-one trillion, twenty-two billion, two hundred twenty million, two hundred thousand, one hundred".