21230032624420 has 24 divisors (see below), whose sum is σ = 45619884059904. Its totient is φ = 8294524373856.

The previous prime is 21230032624397. The next prime is 21230032624501. The reversal of 21230032624420 is 2442623003212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12343041364 + ... + 12343043083.

It is an arithmetic number, because the mean of its divisors is an integer number (1900828502496).

Almost surely, 2^{21230032624420} is an apocalyptic number.

21230032624420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21230032624420 is an abundant number, since it is smaller than the sum of its proper divisors (24389851435484).

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

21230032624420 is a wasteful number, since it uses less digits than its factorization.

21230032624420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24686084499 (or 24686084497 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 21230032624420 its reverse (2442623003212), we get a palindrome (23672655627632).

The spelling of 21230032624420 in words is "twenty-one trillion, two hundred thirty billion, thirty-two million, six hundred twenty-four thousand, four hundred twenty".