21022202001100 has 18 divisors (see below), whose sum is σ = 45618178342604. Its totient is φ = 8408880800400.

The previous prime is 21022202001089. The next prime is 21022202001107. The reversal of 21022202001100 is 110020222012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21022202001107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105111009906 + ... + 105111010105.

Almost surely, 2^{21022202001100} is an apocalyptic number.

21022202001100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022202001100 is an abundant number, since it is smaller than the sum of its proper divisors (24595976341504).

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

21022202001100 is a wasteful number, since it uses less digits than its factorization.

21022202001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210222020025 (or 210222020018 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21022202001100 its reverse (110020222012), we get a palindrome (21132222223112).

The spelling of 21022202001100 in words is "twenty-one trillion, twenty-two billion, two hundred two million, one thousand, one hundred".