122343100261 has 2 divisors, whose sum is σ = 122343100262. Its totient is φ = 122343100260.

The previous prime is 122343100181. The next prime is 122343100273. The reversal of 122343100261 is 162001343221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121003101025 + 1339999236 = 347855^2 + 36606^2 .

It is an emirp because it is prime and its reverse (162001343221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122343100261 - 2²⁵ = 122309545829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122343100291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61171550130 + 61171550131.

It is an arithmetic number, because the mean of its divisors is an integer number (61171550131).

Almost surely, 2^122343100261 is an apocalyptic number.

It is an amenable number.

122343100261 is a deficient number, since it is larger than the sum of its proper divisors (1).

122343100261 is an equidigital number, since it uses as much as digits as its factorization.

122343100261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 122343100261 its reverse (162001343221), we get a palindrome (284344443482).

The spelling of 122343100261 in words is "one hundred twenty-two billion, three hundred forty-three million, one hundred thousand, two hundred sixty-one".