22312542221 has 8 divisors (see below), whose sum is σ = 22374499680. Its totient is φ = 22250646288.

The previous prime is 22312542193. The next prime is 22312542223. The reversal of 22312542221 is 12224521322.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22312542221 is a prime.

It is a super-3 number, since 3×22312542221³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22312542223) 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, 765110 + ... + 793736.

It is an arithmetic number, because the mean of its divisors is an integer number (2796812460).

Almost surely, 2^22312542221 is an apocalyptic number.

It is an amenable number.

22312542221 is a deficient number, since it is larger than the sum of its proper divisors (61957459).

22312542221 is a wasteful number, since it uses less digits than its factorization.

22312542221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30763.

The product of its digits is 3840, while the sum is 26.

It can be divided in two parts, 2231 and 2542221, that added together give a palindrome (2544452).

The spelling of 22312542221 in words is "twenty-two billion, three hundred twelve million, five hundred forty-two thousand, two hundred twenty-one".