122525134440021 has 64 divisors (see below), whose sum is σ = 198708853570560. Its totient is φ = 75242801553408.

The previous prime is 122525134439999. The next prime is 122525134440053. The reversal of 122525134440021 is 120044431525221.

122525134440021 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 251 + 344 + 40 + 0 + 21 = 666.

It is not a de Polignac number, because 122525134440021 - 2⁷ = 122525134439893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122525134440721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33311596 + ... + 36806421.

It is an arithmetic number, because the mean of its divisors is an integer number (3104825837040).

Almost surely, 2^{122525134440021} is an apocalyptic number.

It is an amenable number.

122525134440021 is a deficient number, since it is larger than the sum of its proper divisors (76183719130539).

122525134440021 is an frugal number, since it uses more digits than its factorization.

122525134440021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70118102 (or 70118084 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 122525134440021 its reverse (120044431525221), we get a palindrome (242569565965242).

The spelling of 122525134440021 in words is "one hundred twenty-two trillion, five hundred twenty-five billion, one hundred thirty-four million, four hundred forty thousand, twenty-one".