121152111191 has 2 divisors, whose sum is σ = 121152111192. Its totient is φ = 121152111190.

The previous prime is 121152111131. The next prime is 121152111193. The reversal of 121152111191 is 191111251121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121152111191 - 2²² = 121147916887 is a prime.

Together with 121152111193, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121152111191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121152111193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60576055595 + 60576055596.

It is an arithmetic number, because the mean of its divisors is an integer number (60576055596).

Almost surely, 2^121152111191 is an apocalyptic number.

121152111191 is a deficient number, since it is larger than the sum of its proper divisors (1).

121152111191 is an equidigital number, since it uses as much as digits as its factorization.

121152111191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180, while the sum is 26.

The spelling of 121152111191 in words is "one hundred twenty-one billion, one hundred fifty-two million, one hundred eleven thousand, one hundred ninety-one".