21300142300000 has 72 divisors (see below), whose sum is σ = 52414964415072. Its totient is φ = 8520056880000.

The previous prime is 21300142299941. The next prime is 21300142300061. The reversal of 21300142300000 is 324100312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106400712 + ... + 106600711.

It is an arithmetic number, because the mean of its divisors is an integer number (727985616876).

Almost surely, 2^{21300142300000} is an apocalyptic number.

21300142300000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21300142300000 is an abundant number, since it is smaller than the sum of its proper divisors (31114822115072).

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

21300142300000 is an frugal number, since it uses more digits than its factorization.

21300142300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213001458 (or 213001430 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21300142300000 its reverse (324100312), we get a palindrome (21300466400312).

The spelling of 21300142300000 in words is "twenty-one trillion, three hundred billion, one hundred forty-two million, three hundred thousand".