21130024302 has 48 divisors (see below), whose sum is σ = 49602112560. Its totient is φ = 6474859776.

The previous prime is 21130024291. The next prime is 21130024303. The reversal of 21130024302 is 20342003112.

It is a super-2 number, since 2×21130024302² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130024303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 789777 + ... + 816092.

It is an arithmetic number, because the mean of its divisors is an integer number (1033377345).

Almost surely, 2^21130024302 is an apocalyptic number.

21130024302 is an abundant number, since it is smaller than the sum of its proper divisors (28472088258).

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

21130024302 is a wasteful number, since it uses less digits than its factorization.

21130024302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605937 (or 1605934 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21130024302 its reverse (20342003112), we get a palindrome (41472027414).

The spelling of 21130024302 in words is "twenty-one billion, one hundred thirty million, twenty-four thousand, three hundred two".