10422163921 has 9 divisors (see below), whose sum is σ = 11286975729. Its totient is φ = 9619233936.

The previous prime is 10422163819. The next prime is 10422163931. The reversal of 10422163921 is 12936122401.

The square root of 10422163921 is 102089.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 7680594321 + 2741569600 = 87639^2 + 52360^2 .

It is not a de Polignac number, because 10422163921 - 2¹³ = 10422155729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10422163931) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1323231 + ... + 1331083.

Almost surely, 2^10422163921 is an apocalyptic number.

10422163921 is the 102089-th square number.

10422163921 is the 51045-th centered octagonal number.

It is an amenable number.

10422163921 is a deficient number, since it is larger than the sum of its proper divisors (864811808).

10422163921 is an frugal number, since it uses more digits than its factorization.

10422163921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15732 (or 7866 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

Multiplying 10422163921 by its product of nonzero digits (5184), we get a square (54028497766464 = 7350408²).

The spelling of 10422163921 in words is "ten billion, four hundred twenty-two million, one hundred sixty-three thousand, nine hundred twenty-one".