22234554531521 has 4 divisors (see below), whose sum is σ = 23001263308500. Its totient is φ = 21467845754544.

The previous prime is 22234554531503. The next prime is 22234554531611. The reversal of 22234554531521 is 12513545543222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4363770593296 + 17870783938225 = 2088964^2 + 4227385^2 .

It is a cyclic number.

It is not a de Polignac number, because 22234554531521 - 2³⁰ = 22233480789697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22234554537521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383354388446 + ... + 383354388503.

It is an arithmetic number, because the mean of its divisors is an integer number (5750315827125).

Almost surely, 2^{22234554531521} is an apocalyptic number.

It is an amenable number.

22234554531521 is a deficient number, since it is larger than the sum of its proper divisors (766708776979).

22234554531521 is an equidigital number, since it uses as much as digits as its factorization.

22234554531521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766708776978.

The product of its digits is 1440000, while the sum is 44.

The spelling of 22234554531521 in words is "twenty-two trillion, two hundred thirty-four billion, five hundred fifty-four million, five hundred thirty-one thousand, five hundred twenty-one".