21299102073 has 24 divisors (see below), whose sum is σ = 31181995520. Its totient is φ = 14007427200.

The previous prime is 21299102023. The next prime is 21299102101. The reversal of 21299102073 is 37020199212.

It is not a de Polignac number, because 21299102073 - 2⁶ = 21299102009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21299102023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 841440 + ... + 866382.

Almost surely, 2^21299102073 is an apocalyptic number.

It is an amenable number.

21299102073 is a deficient number, since it is larger than the sum of its proper divisors (9882893447).

21299102073 is a wasteful number, since it uses less digits than its factorization.

21299102073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26229 (or 26226 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The spelling of 21299102073 in words is "twenty-one billion, two hundred ninety-nine million, one hundred two thousand, seventy-three".