21322010100 has 72 divisors (see below), whose sum is σ = 63126411040. Its totient is φ = 5553636480.

The previous prime is 21322010093. The next prime is 21322010123. The reversal of 21322010100 is 101022312.

It is a super-2 number, since 2×21322010100² (a number of 21 digits) contains 22 as substring.

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

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 23 ways as a sum of consecutive naturals, for example, 813535 + ... + 839334.

Almost surely, 2^21322010100 is an apocalyptic number.

21322010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21322010100 is an abundant number, since it is smaller than the sum of its proper divisors (41804400940).

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

21322010100 is a wasteful number, since it uses less digits than its factorization.

21322010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652929 (or 1652922 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21322010100 its reverse (101022312), we get a palindrome (21423032412).

The spelling of 21322010100 in words is "twenty-one billion, three hundred twenty-two million, ten thousand, one hundred".