21012332302 has 16 divisors (see below), whose sum is σ = 33994532880. Its totient is φ = 9683275392.

The previous prime is 21012332293. The next prime is 21012332303. The reversal of 21012332302 is 20323321012.

It is a self number, because there is not a number n which added to its sum of digits gives 21012332302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012332303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596043 + ... + 630310.

It is an arithmetic number, because the mean of its divisors is an integer number (2124658305).

Almost surely, 2^21012332302 is an apocalyptic number.

21012332302 is a deficient number, since it is larger than the sum of its proper divisors (12982200578).

21012332302 is a wasteful number, since it uses less digits than its factorization.

21012332302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227027.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21012332302 its reverse (20323321012), we get a palindrome (41335653314).

The spelling of 21012332302 in words is "twenty-one billion, twelve million, three hundred thirty-two thousand, three hundred two".