10222921 has 4 divisors (see below), whose sum is σ = 10275012. Its totient is φ = 10170832.

The previous prime is 10222913. The next prime is 10222939. The reversal of 10222921 is 12922201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5812921 + 4410000 = 2411^2 + 2100^2 .

It is a cyclic number.

It is not a de Polignac number, because 10222921 - 2³ = 10222913 is a prime.

It is a super-2 number, since 2×10222921² = 209016227544482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10222951) 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, 25750 + ... + 26143.

It is an arithmetic number, because the mean of its divisors is an integer number (2568753).

Almost surely, 2^10222921 is an apocalyptic number.

It is an amenable number.

10222921 is a deficient number, since it is larger than the sum of its proper divisors (52091).

10222921 is an equidigital number, since it uses as much as digits as its factorization.

10222921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52090.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 10222921 is about 3197.3302926035. The cubic root of 10222921 is about 217.0326141810.

The spelling of 10222921 in words is "ten million, two hundred twenty-two thousand, nine hundred twenty-one".