21143310024 has 32 divisors (see below), whose sum is σ = 54680976000. Its totient is φ = 6804743232.

The previous prime is 21143309977. The next prime is 21143310043. The reversal of 21143310024 is 42001334112.

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, 15188464 + ... + 15189855.

It is an arithmetic number, because the mean of its divisors is an integer number (1708780500).

Almost surely, 2^21143310024 is an apocalyptic number.

21143310024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21143310024 is an abundant number, since it is smaller than the sum of its proper divisors (33537665976).

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

21143310024 is a wasteful number, since it uses less digits than its factorization.

21143310024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30378357 (or 30378353 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21143310024 its reverse (42001334112), we get a palindrome (63144644136).

The spelling of 21143310024 in words is "twenty-one billion, one hundred forty-three million, three hundred ten thousand, twenty-four".