21023142021400 has 48 divisors (see below), whose sum is σ = 49035971921040. Its totient is φ = 8382217372800.

The previous prime is 21023142021319. The next prime is 21023142021403. The reversal of 21023142021400 is 412024132012.

21023142021400 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023142021403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168934119 + ... + 169058518.

It is an arithmetic number, because the mean of its divisors is an integer number (1021582748355).

Almost surely, 2^{21023142021400} is an apocalyptic number.

21023142021400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21023142021400 is an abundant number, since it is smaller than the sum of its proper divisors (28012829899640).

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

21023142021400 is a wasteful number, since it uses less digits than its factorization.

21023142021400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337992964 (or 337992955 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21023142021400 its reverse (412024132012), we get a palindrome (21435166153412).

The spelling of 21023142021400 in words is "twenty-one trillion, twenty-three billion, one hundred forty-two million, twenty-one thousand, four hundred".