10257670221 has 4 divisors (see below), whose sum is σ = 13676893632. Its totient is φ = 6838446812.

The previous prime is 10257670219. The next prime is 10257670223. The reversal of 10257670221 is 12207675201.

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 an interprime number because it is at equal distance from previous prime (10257670219) and next prime (10257670223).

It is a cyclic number.

It is not a de Polignac number, because 10257670221 - 2¹ = 10257670219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10257670223) 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, 1709611701 + ... + 1709611706.

It is an arithmetic number, because the mean of its divisors is an integer number (3419223408).

Almost surely, 2^10257670221 is an apocalyptic number.

It is an amenable number.

10257670221 is a deficient number, since it is larger than the sum of its proper divisors (3419223411).

10257670221 is an equidigital number, since it uses as much as digits as its factorization.

10257670221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3419223410.

The product of its (nonzero) digits is 11760, while the sum is 33.

The spelling of 10257670221 in words is "ten billion, two hundred fifty-seven million, six hundred seventy thousand, two hundred twenty-one".