21000302302 has 24 divisors (see below), whose sum is σ = 37145361456. Its totient is φ = 8876837088.

The previous prime is 21000302251. The next prime is 21000302303. The reversal of 21000302302 is 20320300012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000302303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1460578 + ... + 1474885.

It is an arithmetic number, because the mean of its divisors is an integer number (1547723394).

Almost surely, 2^21000302302 is an apocalyptic number.

21000302302 is a deficient number, since it is larger than the sum of its proper divisors (16145059154).

21000302302 is a wasteful number, since it uses less digits than its factorization.

21000302302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935552 (or 2935545 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 21000302302 its reverse (20320300012), we get a palindrome (41320602314).

The spelling of 21000302302 in words is "twenty-one billion, three hundred two thousand, three hundred two".