22355122155321 has 4 divisors (see below), whose sum is σ = 29806829540432. Its totient is φ = 14903414770212.

The previous prime is 22355122155313. The next prime is 22355122155371. The reversal of 22355122155321 is 12355122155322.

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 not a de Polignac number, because 22355122155321 - 2³ = 22355122155313 is a prime.

It is a super-2 number, since 2×22355122155321² (a number of 27 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 22355122155321.

It is not an unprimeable number, because it can be changed into a prime (22355122155371) 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, 3725853692551 + ... + 3725853692556.

It is an arithmetic number, because the mean of its divisors is an integer number (7451707385108).

Almost surely, 2^{22355122155321} is an apocalyptic number.

It is an amenable number.

22355122155321 is a deficient number, since it is larger than the sum of its proper divisors (7451707385111).

22355122155321 is an equidigital number, since it uses as much as digits as its factorization.

22355122155321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7451707385110.

The product of its digits is 180000, while the sum is 39.

Subtracting from 22355122155321 its reverse (12355122155322), we obtain a palindrome (9999999999999).

The spelling of 22355122155321 in words is "twenty-two trillion, three hundred fifty-five billion, one hundred twenty-two million, one hundred fifty-five thousand, three hundred twenty-one".