22139201 has 4 divisors (see below), whose sum is σ = 25301952. Its totient is φ = 18976452.

The previous prime is 22139191. The next prime is 22139203. The reversal of 22139201 is 10293122.

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 not a de Polignac number, because 22139201 - 2⁶ = 22139137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22139203) 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, 1581365 + ... + 1581378.

It is an arithmetic number, because the mean of its divisors is an integer number (6325488).

Almost surely, 2^22139201 is an apocalyptic number.

It is an amenable number.

22139201 is a deficient number, since it is larger than the sum of its proper divisors (3162751).

22139201 is an equidigital number, since it uses as much as digits as its factorization.

22139201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162750.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 22139201 is about 4705.2312376758. The cubic root of 22139201 is about 280.7936708029.

The spelling of 22139201 in words is "twenty-two million, one hundred thirty-nine thousand, two hundred one".