21169038701 has 4 divisors (see below), whose sum is σ = 22089431712. Its totient is φ = 20248645692.

The previous prime is 21169038661. The next prime is 21169038739. The reversal of 21169038701 is 10783096112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21169038701 - 2³⁴ = 3989169517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21169038791) 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, 460196471 + ... + 460196516.

It is an arithmetic number, because the mean of its divisors is an integer number (5522357928).

Almost surely, 2^21169038701 is an apocalyptic number.

It is an amenable number.

21169038701 is a deficient number, since it is larger than the sum of its proper divisors (920393011).

21169038701 is an equidigital number, since it uses as much as digits as its factorization.

21169038701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920393010.

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 21169038701 in words is "twenty-one billion, one hundred sixty-nine million, thirty-eight thousand, seven hundred one".