121121099 has 8 divisors (see below), whose sum is σ = 133416192. Its totient is φ = 109040040.

The previous prime is 121121083. The next prime is 121121113. The reversal of 121121099 is 990121121.

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

It is a cyclic number.

It is not a de Polignac number, because 121121099 - 2⁴ = 121121083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121121699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52319 + ... + 54584.

It is an arithmetic number, because the mean of its divisors is an integer number (16677024).

Almost surely, 2^121121099 is an apocalyptic number.

121121099 is a deficient number, since it is larger than the sum of its proper divisors (12295093).

121121099 is a wasteful number, since it uses less digits than its factorization.

121121099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107017.

The product of its (nonzero) digits is 324, while the sum is 26.

The square root of 121121099 is about 11005.5031234378. The cubic root of 121121099 is about 494.7736937837.

The spelling of 121121099 in words is "one hundred twenty-one million, one hundred twenty-one thousand, ninety-nine".