21230024412 has 48 divisors (see below), whose sum is σ = 50296764672. Its totient is φ = 6968184960.

The previous prime is 21230024411. The next prime is 21230024423. The reversal of 21230024412 is 21442003212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230024411) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2947888 + ... + 2955080.

It is an arithmetic number, because the mean of its divisors is an integer number (1047849264).

Almost surely, 2^21230024412 is an apocalyptic number.

It is an amenable number.

21230024412 is an abundant number, since it is smaller than the sum of its proper divisors (29066740260).

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

21230024412 is a wasteful number, since it uses less digits than its factorization.

21230024412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10938 (or 10936 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21230024412 its reverse (21442003212), we get a palindrome (42672027624).

The spelling of 21230024412 in words is "twenty-one billion, two hundred thirty million, twenty-four thousand, four hundred twelve".