22521123245 has 16 divisors (see below), whose sum is σ = 27611048448. Its totient is φ = 17626728960.

The previous prime is 22521123241. The next prime is 22521123271. The reversal of 22521123245 is 54232112522.

It is a happy number.

It is not a de Polignac number, because 22521123245 - 2² = 22521123241 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22521123241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 638717 + ... + 673053.

It is an arithmetic number, because the mean of its divisors is an integer number (1725690528).

Almost surely, 2^22521123245 is an apocalyptic number.

It is an amenable number.

22521123245 is a deficient number, since it is larger than the sum of its proper divisors (5089925203).

22521123245 is a wasteful number, since it uses less digits than its factorization.

22521123245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37180.

The product of its digits is 9600, while the sum is 29.

Adding to 22521123245 its reverse (54232112522), we get a palindrome (76753235767).

The spelling of 22521123245 in words is "twenty-two billion, five hundred twenty-one million, one hundred twenty-three thousand, two hundred forty-five".