22152504221 has 8 divisors (see below), whose sum is σ = 22837356024. Its totient is φ = 21474535680.

The previous prime is 22152504167. The next prime is 22152504229. The reversal of 22152504221 is 12240525122.

It can be written as a sum of positive squares in 4 ways, for example, as 2531498596 + 19621005625 = 50314^2 + 140075^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22152504221 - 2³⁴ = 4972635037 is a prime.

It is a super-2 number, since 2×22152504221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22152504229) 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, 1714280 + ... + 1727153.

It is an arithmetic number, because the mean of its divisors is an integer number (2854669503).

Almost surely, 2^22152504221 is an apocalyptic number.

It is an amenable number.

22152504221 is a deficient number, since it is larger than the sum of its proper divisors (684851803).

22152504221 is a wasteful number, since it uses less digits than its factorization.

22152504221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441631.

The product of its (nonzero) digits is 3200, while the sum is 26.

The spelling of 22152504221 in words is "twenty-two billion, one hundred fifty-two million, five hundred four thousand, two hundred twenty-one".