121340343299 has 4 divisors (see below), whose sum is σ = 138674678064. Its totient is φ = 104006008536.

The previous prime is 121340343281. The next prime is 121340343347. The reversal of 121340343299 is 992343043121.

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

It is a cyclic number.

It is not a de Polignac number, because 121340343299 - 2⁸ = 121340343043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121340343209) 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, 8667167372 + ... + 8667167385.

It is an arithmetic number, because the mean of its divisors is an integer number (34668669516).

Almost surely, 2^121340343299 is an apocalyptic number.

121340343299 is a deficient number, since it is larger than the sum of its proper divisors (17334334765).

121340343299 is an equidigital number, since it uses as much as digits as its factorization.

121340343299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17334334764.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 121340343299 in words is "one hundred twenty-one billion, three hundred forty million, three hundred forty-three thousand, two hundred ninety-nine".