122987099 has 2 divisors, whose sum is σ = 122987100. Its totient is φ = 122987098.

The previous prime is 122987089. The next prime is 122987201. The reversal of 122987099 is 990789221.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (990789221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122987099 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122987089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61493549 + 61493550.

It is an arithmetic number, because the mean of its divisors is an integer number (61493550).

Almost surely, 2^122987099 is an apocalyptic number.

122987099 is a deficient number, since it is larger than the sum of its proper divisors (1).

122987099 is an equidigital number, since it uses as much as digits as its factorization.

122987099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 122987099 is about 11089.9548691597. The cubic root of 122987099 is about 497.3015954230.

The spelling of 122987099 in words is "one hundred twenty-two million, nine hundred eighty-seven thousand, ninety-nine".