122601972491 has 2 divisors, whose sum is σ = 122601972492. Its totient is φ = 122601972490.

The previous prime is 122601972473. The next prime is 122601972497. The reversal of 122601972491 is 194279106221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122601972491 is a prime.

It is a super-3 number, since 3×122601972491³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (122601972497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61300986245 + 61300986246.

It is an arithmetic number, because the mean of its divisors is an integer number (61300986246).

Almost surely, 2^122601972491 is an apocalyptic number.

122601972491 is a deficient number, since it is larger than the sum of its proper divisors (1).

122601972491 is an equidigital number, since it uses as much as digits as its factorization.

122601972491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 122601972491 in words is "one hundred twenty-two billion, six hundred one million, nine hundred seventy-two thousand, four hundred ninety-one".