121924854169 has 2 divisors, whose sum is σ = 121924854170. Its totient is φ = 121924854168.

The previous prime is 121924854101. The next prime is 121924854179. The reversal of 121924854169 is 961458429121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110731214169 + 11193640000 = 332763^2 + 105800^2 .

It is a cyclic number.

It is not a de Polignac number, because 121924854169 - 2⁹ = 121924853657 is a prime.

It is a super-2 number, since 2×121924854169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121924854179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60962427084 + 60962427085.

It is an arithmetic number, because the mean of its divisors is an integer number (60962427085).

Almost surely, 2^121924854169 is an apocalyptic number.

It is an amenable number.

121924854169 is a deficient number, since it is larger than the sum of its proper divisors (1).

121924854169 is an equidigital number, since it uses as much as digits as its factorization.

121924854169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 52.

The spelling of 121924854169 in words is "one hundred twenty-one billion, nine hundred twenty-four million, eight hundred fifty-four thousand, one hundred sixty-nine".