123121050444361 has 2 divisors, whose sum is σ = 123121050444362. Its totient is φ = 123121050444360.

The previous prime is 123121050444347. The next prime is 123121050444419. The reversal of 123121050444361 is 163444050121321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112125459722761 + 10995590721600 = 10588931^2 + 3315960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123121050444361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123121050444361.

It is not a weakly prime, because it can be changed into another prime (123121050444331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61560525222180 + 61560525222181.

It is an arithmetic number, because the mean of its divisors is an integer number (61560525222181).

Almost surely, 2^{123121050444361} is an apocalyptic number.

It is an amenable number.

123121050444361 is a deficient number, since it is larger than the sum of its proper divisors (1).

123121050444361 is an equidigital number, since it uses as much as digits as its factorization.

123121050444361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 123121050444361 in words is "one hundred twenty-three trillion, one hundred twenty-one billion, fifty million, four hundred forty-four thousand, three hundred sixty-one".