121152111099 has 16 divisors (see below), whose sum is σ = 165507027840. Its totient is φ = 78783371840.

The previous prime is 121152111079. The next prime is 121152111109. The reversal of 121152111099 is 990111251121.

It is a cyclic number.

It is not a de Polignac number, because 121152111099 - 2¹⁹ = 121151586811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121152111079) 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, 587932 + ... + 766790.

It is an arithmetic number, because the mean of its divisors is an integer number (10344189240).

Almost surely, 2^121152111099 is an apocalyptic number.

121152111099 is a deficient number, since it is larger than the sum of its proper divisors (44354916741).

121152111099 is a wasteful number, since it uses less digits than its factorization.

121152111099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184410.

The product of its (nonzero) digits is 1620, while the sum is 33.

The spelling of 121152111099 in words is "one hundred twenty-one billion, one hundred fifty-two million, one hundred eleven thousand, ninety-nine".