21101302996 has 12 divisors (see below), whose sum is σ = 36971830420. Its totient is φ = 10537922880.

The previous prime is 21101302993. The next prime is 21101302997. The reversal of 21101302996 is 69920310112.

It can be written as a sum of positive squares in 2 ways, for example, as 12016544400 + 9084758596 = 109620^2 + 95314^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101302993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3178425 + ... + 3185056.

Almost surely, 2^21101302996 is an apocalyptic number.

It is an amenable number.

21101302996 is a deficient number, since it is larger than the sum of its proper divisors (15870527424).

21101302996 is a wasteful number, since it uses less digits than its factorization.

21101302996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6364314 (or 6364312 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 21101302996 in words is "twenty-one billion, one hundred one million, three hundred two thousand, nine hundred ninety-six".