21142021300 has 36 divisors (see below), whose sum is σ = 45998055936. Its totient is φ = 8434712800.

The previous prime is 21142021267. The next prime is 21142021349. The reversal of 21142021300 is 312024112.

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, 237706 + ... + 314305.

It is an arithmetic number, because the mean of its divisors is an integer number (1277723776).

Almost surely, 2^21142021300 is an apocalyptic number.

21142021300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21142021300 is an abundant number, since it is smaller than the sum of its proper divisors (24856034636).

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

21142021300 is a wasteful number, since it uses less digits than its factorization.

21142021300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552408 (or 552401 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21142021300 its reverse (312024112), we get a palindrome (21454045412).

The spelling of 21142021300 in words is "twenty-one billion, one hundred forty-two million, twenty-one thousand, three hundred".