122687576213 has 2 divisors, whose sum is σ = 122687576214. Its totient is φ = 122687576212.

The previous prime is 122687576203. The next prime is 122687576239. The reversal of 122687576213 is 312675786221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117276796849 + 5410779364 = 342457^2 + 73558^2 .

It is a cyclic number.

It is not a de Polignac number, because 122687576213 - 2³⁶ = 53968099477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122687576203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61343788106 + 61343788107.

It is an arithmetic number, because the mean of its divisors is an integer number (61343788107).

Almost surely, 2^122687576213 is an apocalyptic number.

It is an amenable number.

122687576213 is a deficient number, since it is larger than the sum of its proper divisors (1).

122687576213 is an equidigital number, since it uses as much as digits as its factorization.

122687576213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 50.

The spelling of 122687576213 in words is "one hundred twenty-two billion, six hundred eighty-seven million, five hundred seventy-six thousand, two hundred thirteen".