121394058239 has 4 divisors (see below), whose sum is σ = 121420435656. Its totient is φ = 121367680824.

The previous prime is 121394058217. The next prime is 121394058277. The reversal of 121394058239 is 932850493121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121394058239 is a prime.

It is a super-2 number, since 2×121394058239² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121394058193 and 121394058202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121394058209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13181804 + ... + 13191009.

It is an arithmetic number, because the mean of its divisors is an integer number (30355108914).

Almost surely, 2^121394058239 is an apocalyptic number.

121394058239 is a deficient number, since it is larger than the sum of its proper divisors (26377417).

121394058239 is an equidigital number, since it uses as much as digits as its factorization.

121394058239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26377416.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 121394058239 in words is "one hundred twenty-one billion, three hundred ninety-four million, fifty-eight thousand, two hundred thirty-nine".