22251987241 has 27 divisors (see below), whose sum is σ = 24938703517. Its totient is φ = 19839743000.

The previous prime is 22251987181. The next prime is 22251987319. The reversal of 22251987241 is 14278915222.

The square root of 22251987241 is 149171.

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

It is not a de Polignac number, because 22251987241 - 2¹¹ = 22251985193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22251987041) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 116502456 + ... + 116502646.

Almost surely, 2^22251987241 is an apocalyptic number.

22251987241 is the 149171-st square number.

22251987241 is the 74586-th centered octagonal number.

It is an amenable number.

22251987241 is a deficient number, since it is larger than the sum of its proper divisors (2686716276).

22251987241 is an frugal number, since it uses more digits than its factorization.

22251987241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546 (or 273 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The spelling of 22251987241 in words is "twenty-two billion, two hundred fifty-one million, nine hundred eighty-seven thousand, two hundred forty-one".