122153321225 has 96 divisors (see below), whose sum is σ = 169162506240. Its totient is φ = 86945322240.

The previous prime is 122153321219. The next prime is 122153321393. The reversal of 122153321225 is 522123351221.

It is a happy number.

It is not a de Polignac number, because 122153321225 - 2⁴ = 122153321209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 250827932 + ... + 250828418.

It is an arithmetic number, because the mean of its divisors is an integer number (1762109440).

Almost surely, 2^122153321225 is an apocalyptic number.

It is an amenable number.

122153321225 is a deficient number, since it is larger than the sum of its proper divisors (47009185015).

122153321225 is a wasteful number, since it uses less digits than its factorization.

122153321225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 794 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

Adding to 122153321225 its reverse (522123351221), we get a palindrome (644276672446).

The spelling of 122153321225 in words is "one hundred twenty-two billion, one hundred fifty-three million, three hundred twenty-one thousand, two hundred twenty-five".