121316910619 has 2 divisors, whose sum is σ = 121316910620. Its totient is φ = 121316910618.

The previous prime is 121316910607. The next prime is 121316910623. The reversal of 121316910619 is 916019613121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121316910619 - 2¹¹ = 121316908571 is a prime.

It is a super-2 number, since 2×121316910619² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121316910679) 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, 60658455309 + 60658455310.

It is an arithmetic number, because the mean of its divisors is an integer number (60658455310).

Almost surely, 2^121316910619 is an apocalyptic number.

121316910619 is a deficient number, since it is larger than the sum of its proper divisors (1).

121316910619 is an equidigital number, since it uses as much as digits as its factorization.

121316910619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 40.

The spelling of 121316910619 in words is "one hundred twenty-one billion, three hundred sixteen million, nine hundred ten thousand, six hundred nineteen".