121909319227 has 2 divisors, whose sum is σ = 121909319228. Its totient is φ = 121909319226.

The previous prime is 121909319177. The next prime is 121909319237. The reversal of 121909319227 is 722913909121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121909319227 - 2⁷ = 121909319099 is a prime.

It is a super-2 number, since 2×121909319227² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121909319237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60954659613 + 60954659614.

It is an arithmetic number, because the mean of its divisors is an integer number (60954659614).

Almost surely, 2^121909319227 is an apocalyptic number.

121909319227 is a deficient number, since it is larger than the sum of its proper divisors (1).

121909319227 is an equidigital number, since it uses as much as digits as its factorization.

121909319227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 46.

The spelling of 121909319227 in words is "one hundred twenty-one billion, nine hundred nine million, three hundred nineteen thousand, two hundred twenty-seven".