121519430099 has 16 divisors (see below), whose sum is σ = 126449164800. Its totient is φ = 116688936000.

The previous prime is 121519430093. The next prime is 121519430119. The reversal of 121519430099 is 990034915121.

It is a cyclic number.

It is not a de Polignac number, because 121519430099 - 2¹² = 121519426003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121519430093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1708844 + ... + 1778534.

It is an arithmetic number, because the mean of its divisors is an integer number (7903072800).

Almost surely, 2^121519430099 is an apocalyptic number.

121519430099 is a deficient number, since it is larger than the sum of its proper divisors (4929734701).

121519430099 is an equidigital number, since it uses as much as digits as its factorization.

121519430099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70402.

The product of its (nonzero) digits is 87480, while the sum is 44.

The spelling of 121519430099 in words is "one hundred twenty-one billion, five hundred nineteen million, four hundred thirty thousand, ninety-nine".