21130333002 has 32 divisors (see below), whose sum is σ = 46961371200. Its totient is φ = 7042683024.

The previous prime is 21130332989. The next prime is 21130333009. The reversal of 21130333002 is 20033303112.

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

It is not an unprimeable number, because it can be changed into a prime (21130333009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723813 + ... + 752439.

It is an arithmetic number, because the mean of its divisors is an integer number (1467542850).

Almost surely, 2^21130333002 is an apocalyptic number.

21130333002 is an abundant number, since it is smaller than the sum of its proper divisors (25831038198).

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

21130333002 is a wasteful number, since it uses less digits than its factorization.

21130333002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42307 (or 42301 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 21130333002 its reverse (20033303112), we get a palindrome (41163636114).

The spelling of 21130333002 in words is "twenty-one billion, one hundred thirty million, three hundred thirty-three thousand, two".