121426610177 has 2 divisors, whose sum is σ = 121426610178. Its totient is φ = 121426610176.

The previous prime is 121426610153. The next prime is 121426610191. The reversal of 121426610177 is 771016624121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116821087681 + 4605522496 = 341791^2 + 67864^2 .

It is an emirp because it is prime and its reverse (771016624121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121426610177 - 2¹⁰ = 121426609153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121426610177.

It is not a weakly prime, because it can be changed into another prime (121426610677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60713305088 + 60713305089.

It is an arithmetic number, because the mean of its divisors is an integer number (60713305089).

Almost surely, 2^121426610177 is an apocalyptic number.

It is an amenable number.

121426610177 is a deficient number, since it is larger than the sum of its proper divisors (1).

121426610177 is an equidigital number, since it uses as much as digits as its factorization.

121426610177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 38.

The spelling of 121426610177 in words is "one hundred twenty-one billion, four hundred twenty-six million, six hundred ten thousand, one hundred seventy-seven".