121345404239 has 2 divisors, whose sum is σ = 121345404240. Its totient is φ = 121345404238.

The previous prime is 121345404223. The next prime is 121345404241. The reversal of 121345404239 is 932404543121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121345404239 - 2⁴ = 121345404223 is a prime.

Together with 121345404241, 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 (121345404209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60672702119 + 60672702120.

It is an arithmetic number, because the mean of its divisors is an integer number (60672702120).

Almost surely, 2^121345404239 is an apocalyptic number.

121345404239 is a deficient number, since it is larger than the sum of its proper divisors (1).

121345404239 is an equidigital number, since it uses as much as digits as its factorization.

121345404239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 121345404239 in words is "one hundred twenty-one billion, three hundred forty-five million, four hundred four thousand, two hundred thirty-nine".