22242403121 has 4 divisors (see below), whose sum is σ = 22242701412. Its totient is φ = 22242104832.

The previous prime is 22242403111. The next prime is 22242403123. The reversal of 22242403121 is 12130424222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8048063521 + 14194339600 = 89711^2 + 119140^2 .

It is a cyclic number.

It is not a de Polignac number, because 22242403121 - 2³⁴ = 5062533937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22242403123) 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, 72545 + ... + 223041.

It is an arithmetic number, because the mean of its divisors is an integer number (5560675353).

Almost surely, 2^22242403121 is an apocalyptic number.

It is an amenable number.

22242403121 is a deficient number, since it is larger than the sum of its proper divisors (298291).

22242403121 is a wasteful number, since it uses less digits than its factorization.

22242403121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298290.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 22242403121 its reverse (12130424222), we get a palindrome (34372827343).

The spelling of 22242403121 in words is "twenty-two billion, two hundred forty-two million, four hundred three thousand, one hundred twenty-one".