121226403719 has 2 divisors, whose sum is σ = 121226403720. Its totient is φ = 121226403718.

The previous prime is 121226403679. The next prime is 121226403721. The reversal of 121226403719 is 917304622121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121226403719 - 2³² = 116931436423 is a prime.

It is a super-2 number, since 2×121226403719² (a number of 23 digits) contains 22 as substring.

Together with 121226403721, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121226403769) 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, 60613201859 + 60613201860.

It is an arithmetic number, because the mean of its divisors is an integer number (60613201860).

Almost surely, 2^121226403719 is an apocalyptic number.

121226403719 is a deficient number, since it is larger than the sum of its proper divisors (1).

121226403719 is an equidigital number, since it uses as much as digits as its factorization.

121226403719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 121226403719 in words is "one hundred twenty-one billion, two hundred twenty-six million, four hundred three thousand, seven hundred nineteen".