10108921001 has 4 divisors (see below), whose sum is σ = 10165395600. Its totient is φ = 10052446404.

The previous prime is 10108920989. The next prime is 10108921003. The reversal of 10108921001 is 10012980101.

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 a de Polignac number, because none of the positive numbers 2^k-10108921001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10108921003) 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, 28237031 + ... + 28237388.

It is an arithmetic number, because the mean of its divisors is an integer number (2541348900).

Almost surely, 2^10108921001 is an apocalyptic number.

It is an amenable number.

10108921001 is a deficient number, since it is larger than the sum of its proper divisors (56474599).

10108921001 is an equidigital number, since it uses as much as digits as its factorization.

10108921001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56474598.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 10108921001 in words is "ten billion, one hundred eight million, nine hundred twenty-one thousand, one".