121347396239 has 2 divisors, whose sum is σ = 121347396240. Its totient is φ = 121347396238.

The previous prime is 121347396199. The next prime is 121347396241. The reversal of 121347396239 is 932693743121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121347396239 - 2³⁶ = 52627919503 is a prime.

It is a Sophie Germain prime.

Together with 121347396241, 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 (121347396259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60673698119 + 60673698120.

It is an arithmetic number, because the mean of its divisors is an integer number (60673698120).

Almost surely, 2^121347396239 is an apocalyptic number.

121347396239 is a deficient number, since it is larger than the sum of its proper divisors (1).

121347396239 is an equidigital number, since it uses as much as digits as its factorization.

121347396239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 50.

The spelling of 121347396239 in words is "one hundred twenty-one billion, three hundred forty-seven million, three hundred ninety-six thousand, two hundred thirty-nine".