122621137025 has 6 divisors (see below), whose sum is σ = 152050209942. Its totient is φ = 98096909600.

The previous prime is 122621136997. The next prime is 122621137033. The reversal of 122621137025 is 520731126221.

It can be written as a sum of positive squares in 3 ways, for example, as 14894737936 + 107726399089 = 122044^2 + 328217^2 .

It is not a de Polignac number, because 122621137025 - 2⁶ = 122621136961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122621136982 and 122621137000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2452422716 + ... + 2452422765.

It is an arithmetic number, because the mean of its divisors is an integer number (25341701657).

Almost surely, 2^122621137025 is an apocalyptic number.

It is an amenable number.

122621137025 is a deficient number, since it is larger than the sum of its proper divisors (29429072917).

122621137025 is an equidigital number, since it uses as much as digits as its factorization.

122621137025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4904845491 (or 4904845486 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 122621137025 in words is "one hundred twenty-two billion, six hundred twenty-one million, one hundred thirty-seven thousand, twenty-five".