122561985199 has 2 divisors, whose sum is σ = 122561985200. Its totient is φ = 122561985198.

The previous prime is 122561985019. The next prime is 122561985251. The reversal of 122561985199 is 991589165221.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (991589165221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122561985199 - 2¹⁵ = 122561952431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122561985499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61280992599 + 61280992600.

It is an arithmetic number, because the mean of its divisors is an integer number (61280992600).

Almost surely, 2^122561985199 is an apocalyptic number.

122561985199 is a deficient number, since it is larger than the sum of its proper divisors (1).

122561985199 is an equidigital number, since it uses as much as digits as its factorization.

122561985199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3499200, while the sum is 58.

The spelling of 122561985199 in words is "one hundred twenty-two billion, five hundred sixty-one million, nine hundred eighty-five thousand, one hundred ninety-nine".