121311242099 has 8 divisors (see below), whose sum is σ = 121936405920. Its totient is φ = 120687515136.

The previous prime is 121311242081. The next prime is 121311242119. The reversal of 121311242099 is 990242113121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121311242099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121311442099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189719 + ... + 527840.

It is an arithmetic number, because the mean of its divisors is an integer number (15242050740).

Almost surely, 2^121311242099 is an apocalyptic number.

121311242099 is a deficient number, since it is larger than the sum of its proper divisors (625163821).

121311242099 is an equidigital number, since it uses as much as digits as its factorization.

121311242099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718429.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 121311242099 in words is "one hundred twenty-one billion, three hundred eleven million, two hundred forty-two thousand, ninety-nine".