21023302302 has 40 divisors (see below), whose sum is σ = 48627387072. Its totient is φ = 6781708800.

The previous prime is 21023302259. The next prime is 21023302309. The reversal of 21023302302 is 20320332012.

It is a happy number.

21023302302 is a `hidden beast` number, since 2 + 102 + 330 + 230 + 2 = 666.

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 (21023302309) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2088099 + ... + 2098142.

Almost surely, 2^21023302302 is an apocalyptic number.

21023302302 is an abundant number, since it is smaller than the sum of its proper divisors (27604084770).

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

21023302302 is a wasteful number, since it uses less digits than its factorization.

21023302302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4186286 (or 4186277 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21023302302 its reverse (20320332012), we get a palindrome (41343634314).

The spelling of 21023302302 in words is "twenty-one billion, twenty-three million, three hundred two thousand, three hundred two".