10020910921 has 8 divisors (see below), whose sum is σ = 11821904384. Its totient is φ = 8312276160.

The previous prime is 10020910919. The next prime is 10020910927. The reversal of 10020910921 is 12901902001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10020910921 - 2¹ = 10020910919 is a prime.

It is the 100105-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10020910927) by changing a digit.

It is a nontrivial repunit in base 100104.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23089440 + ... + 23089873.

It is an arithmetic number, because the mean of its divisors is an integer number (1477738048).

Almost surely, 2^10020910921 is an apocalyptic number.

It is an amenable number.

10020910921 is a deficient number, since it is larger than the sum of its proper divisors (1800993463).

10020910921 is an equidigital number, since it uses as much as digits as its factorization.

10020910921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46179351.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 10020910921 in words is "ten billion, twenty million, nine hundred ten thousand, nine hundred twenty-one".