121330121099 has 16 divisors (see below), whose sum is σ = 140850316800. Its totient is φ = 103290168960.

The previous prime is 121330121053. The next prime is 121330121153. The reversal of 121330121099 is 990121033121.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-121330121099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121330121009) 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 15 ways as a sum of consecutive naturals, for example, 1592999 + ... + 1667424.

It is an arithmetic number, because the mean of its divisors is an integer number (8803144800).

Almost surely, 2^121330121099 is an apocalyptic number.

121330121099 is a deficient number, since it is larger than the sum of its proper divisors (19520195701).

121330121099 is a wasteful number, since it uses less digits than its factorization.

121330121099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260650.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 121330121099 in words is "one hundred twenty-one billion, three hundred thirty million, one hundred twenty-one thousand, ninety-nine".