22238901 has 8 divisors (see below), whose sum is σ = 32946560. Its totient is φ = 14825916.

The previous prime is 22238891. The next prime is 22238903. The reversal of 22238901 is 10983222.

It is a happy number.

It is not a de Polignac number, because 22238901 - 2¹¹ = 22236853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 823663 = 22238901 / (2 + 2 + 2 + 3 + 8 + 9 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22238903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411805 + ... + 411858.

It is an arithmetic number, because the mean of its divisors is an integer number (4118320).

Almost surely, 2^22238901 is an apocalyptic number.

It is an amenable number.

22238901 is a deficient number, since it is larger than the sum of its proper divisors (10707659).

22238901 is an equidigital number, since it uses as much as digits as its factorization.

22238901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823672 (or 823666 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 22238901 is about 4715.8139276269. The cubic root of 22238901 is about 281.2145413075.

The spelling of 22238901 in words is "twenty-two million, two hundred thirty-eight thousand, nine hundred one".