21322123101300 has 144 divisors (see below), whose sum is σ = 71470978259072. Its totient is φ = 4806866073600.

The previous prime is 21322123101281. The next prime is 21322123101311. The reversal of 21322123101300 is 310132122312.

It is a super-2 number, since 2×21322123101300² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 69390481 + ... + 69697080.

Almost surely, 2^{21322123101300} is an apocalyptic number.

21322123101300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21322123101300 is an abundant number, since it is smaller than the sum of its proper divisors (50148855157772).

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

21322123101300 is a wasteful number, since it uses less digits than its factorization.

21322123101300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139087658 (or 139087651 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21322123101300 its reverse (310132122312), we get a palindrome (21632255223612).

The spelling of 21322123101300 in words is "twenty-one trillion, three hundred twenty-two billion, one hundred twenty-three million, one hundred one thousand, three hundred".