21022334023400 has 24 divisors (see below), whose sum is σ = 48876926604870. Its totient is φ = 8408933609280.

The previous prime is 21022334023363. The next prime is 21022334023403. The reversal of 21022334023400 is 432043322012.

It can be written as a sum of positive squares in 3 ways, for example, as 16027707985444 + 4994626037956 = 4003462^2 + 2234866^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21022334023400.

It is not an unprimeable number, because it can be changed into a prime (21022334023403) 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, 52555834859 + ... + 52555835258.

Almost surely, 2^{21022334023400} is an apocalyptic number.

21022334023400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022334023400 is an abundant number, since it is smaller than the sum of its proper divisors (27854592581470).

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

21022334023400 is a wasteful number, since it uses less digits than its factorization.

21022334023400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105111670133 (or 105111670124 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 21022334023400 its reverse (432043322012), we get a palindrome (21454377345412).

The spelling of 21022334023400 in words is "twenty-one trillion, twenty-two billion, three hundred thirty-four million, twenty-three thousand, four hundred".