22221244331 has 16 divisors (see below), whose sum is σ = 26118113280. Its totient is φ = 18638601120.

The previous prime is 22221244301. The next prime is 22221244337. The reversal of 22221244331 is 13344212222.

It is a cyclic number.

It is not a de Polignac number, because 22221244331 - 2²² = 22217050027 is a prime.

It is a super-2 number, since 2×22221244331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22221244331.

It is not an unprimeable number, because it can be changed into a prime (22221244337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285476 + ... + 354878.

It is an arithmetic number, because the mean of its divisors is an integer number (1632382080).

Almost surely, 2^22221244331 is an apocalyptic number.

22221244331 is a deficient number, since it is larger than the sum of its proper divisors (3896868949).

22221244331 is a wasteful number, since it uses less digits than its factorization.

22221244331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71666.

The product of its digits is 4608, while the sum is 26.

Adding to 22221244331 its reverse (13344212222), we get a palindrome (35565456553).

The spelling of 22221244331 in words is "twenty-two billion, two hundred twenty-one million, two hundred forty-four thousand, three hundred thirty-one".