21020002996 has 24 divisors (see below), whose sum is σ = 37347912000. Its totient is φ = 10349287872.

The previous prime is 21020002987. The next prime is 21020003027. The reversal of 21020002996 is 69920002012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790656 + ... + 816808.

It is an arithmetic number, because the mean of its divisors is an integer number (1556163000).

Almost surely, 2^21020002996 is an apocalyptic number.

It is an amenable number.

21020002996 is a deficient number, since it is larger than the sum of its proper divisors (16327909004).

21020002996 is a wasteful number, since it uses less digits than its factorization.

21020002996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29223 (or 29221 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 21020002996 in words is "twenty-one billion, twenty million, two thousand, nine hundred ninety-six".