122001655225 has 6 divisors (see below), whose sum is σ = 151282052510. Its totient is φ = 97601324160.

The previous prime is 122001655213. The next prime is 122001655229. The reversal of 122001655225 is 522556100221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 19199982096 + 102801673129 = 138564^2 + 320627^2 .

It is not a de Polignac number, because 122001655225 - 2¹¹ = 122001653177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122001655229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2440033080 + ... + 2440033129.

Almost surely, 2^122001655225 is an apocalyptic number.

It is an amenable number.

122001655225 is a deficient number, since it is larger than the sum of its proper divisors (29280397285).

122001655225 is an equidigital number, since it uses as much as digits as its factorization.

122001655225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4880066219 (or 4880066214 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 122001655225 its reverse (522556100221), we get a palindrome (644557755446).

The spelling of 122001655225 in words is "one hundred twenty-two billion, one million, six hundred fifty-five thousand, two hundred twenty-five".