22445122121 has 4 divisors (see below), whose sum is σ = 22663036032. Its totient is φ = 22227208212.

The previous prime is 22445122109. The next prime is 22445122127. The reversal of 22445122121 is 12122154422.

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 a cyclic number.

It is not a de Polignac number, because 22445122121 - 2¹⁴ = 22445105737 is a prime.

It is a super-3 number, since 3×22445122121³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22445122127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108956801 + ... + 108957006.

It is an arithmetic number, because the mean of its divisors is an integer number (5665759008).

Almost surely, 2^22445122121 is an apocalyptic number.

It is an amenable number.

22445122121 is a deficient number, since it is larger than the sum of its proper divisors (217913911).

22445122121 is a wasteful number, since it uses less digits than its factorization.

22445122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217913910.

The product of its digits is 2560, while the sum is 26.

Adding to 22445122121 its reverse (12122154422), we get a palindrome (34567276543).

The spelling of 22445122121 in words is "twenty-two billion, four hundred forty-five million, one hundred twenty-two thousand, one hundred twenty-one".