121341494249 has 4 divisors (see below), whose sum is σ = 121342481040. Its totient is φ = 121340507460.

The previous prime is 121341494237. The next prime is 121341494279. The reversal of 121341494249 is 942494143121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121341494249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121341494279) 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, 277439 + ... + 565380.

It is an arithmetic number, because the mean of its divisors is an integer number (30335620260).

Almost surely, 2^121341494249 is an apocalyptic number.

It is an amenable number.

121341494249 is a deficient number, since it is larger than the sum of its proper divisors (986791).

121341494249 is an equidigital number, since it uses as much as digits as its factorization.

121341494249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986790.

The product of its digits is 248832, while the sum is 44.

The spelling of 121341494249 in words is "one hundred twenty-one billion, three hundred forty-one million, four hundred ninety-four thousand, two hundred forty-nine".