21101302995 has 16 divisors (see below), whose sum is σ = 33842672640. Its totient is φ = 11227165664.

The previous prime is 21101302993. The next prime is 21101302997. The reversal of 21101302995 is 59920310112.

It is an interprime number because it is at equal distance from previous prime (21101302993) and next prime (21101302997).

It is a cyclic number.

It is not a de Polignac number, because 21101302995 - 2¹ = 21101302993 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1672419 + ... + 1684988.

It is an arithmetic number, because the mean of its divisors is an integer number (2115167040).

Almost surely, 2^21101302995 is an apocalyptic number.

21101302995 is a deficient number, since it is larger than the sum of its proper divisors (12741369645).

21101302995 is a wasteful number, since it uses less digits than its factorization.

21101302995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3357834.

The product of its (nonzero) digits is 4860, while the sum is 33.

The spelling of 21101302995 in words is "twenty-one billion, one hundred one million, three hundred two thousand, nine hundred ninety-five".