122100100747987 has 2 divisors, whose sum is σ = 122100100747988. Its totient is φ = 122100100747986.

The previous prime is 122100100747973. The next prime is 122100100748039. The reversal of 122100100747987 is 789747001001221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122100100747987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122100100747987.

It is not a weakly prime, because it can be changed into another prime (122100100747187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61050050373993 + 61050050373994.

It is an arithmetic number, because the mean of its divisors is an integer number (61050050373994).

Almost surely, 2^{122100100747987} is an apocalyptic number.

122100100747987 is a deficient number, since it is larger than the sum of its proper divisors (1).

122100100747987 is an equidigital number, since it uses as much as digits as its factorization.

122100100747987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 49.

The spelling of 122100100747987 in words is "one hundred twenty-two trillion, one hundred billion, one hundred million, seven hundred forty-seven thousand, nine hundred eighty-seven".