122646521 has 2 divisors, whose sum is σ = 122646522. Its totient is φ = 122646520.

The previous prime is 122646467. The next prime is 122646533. The reversal of 122646521 is 125646221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120121600 + 2524921 = 10960^2 + 1589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122646521 is a prime.

It is a super-2 number, since 2×122646521² = 30084338226806882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (122646541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61323260 + 61323261.

It is an arithmetic number, because the mean of its divisors is an integer number (61323261).

Almost surely, 2^122646521 is an apocalyptic number.

It is an amenable number.

122646521 is a deficient number, since it is larger than the sum of its proper divisors (1).

122646521 is an equidigital number, since it uses as much as digits as its factorization.

122646521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 122646521 is about 11074.5889765715. The cubic root of 122646521 is about 496.8421256470.

The spelling of 122646521 in words is "one hundred twenty-two million, six hundred forty-six thousand, five hundred twenty-one".