21210300233020 has 24 divisors (see below), whose sum is σ = 45078276643344. Its totient is φ = 8381901778176.

The previous prime is 21210300232999. The next prime is 21210300233141. The reversal of 21210300233020 is 2033200301212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6388642989 + ... + 6388646308.

It is an arithmetic number, because the mean of its divisors is an integer number (1878261526806).

Almost surely, 2^{21210300233020} is an apocalyptic number.

21210300233020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21210300233020 is an abundant number, since it is smaller than the sum of its proper divisors (23867976410324).

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

21210300233020 is a wasteful number, since it uses less digits than its factorization.

21210300233020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12777289389 (or 12777289387 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21210300233020 its reverse (2033200301212), we get a palindrome (23243500534232).

The spelling of 21210300233020 in words is "twenty-one trillion, two hundred ten billion, three hundred million, two hundred thirty-three thousand, twenty".