121149311 has 2 divisors, whose sum is σ = 121149312. Its totient is φ = 121149310.

The previous prime is 121149283. The next prime is 121149313. The reversal of 121149311 is 113941121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121149311 - 2²⁶ = 54040447 is a prime.

Together with 121149313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121149313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60574655 + 60574656.

It is an arithmetic number, because the mean of its divisors is an integer number (60574656).

Almost surely, 2^121149311 is an apocalyptic number.

121149311 is a deficient number, since it is larger than the sum of its proper divisors (1).

121149311 is an equidigital number, since it uses as much as digits as its factorization.

121149311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 23.

The square root of 121149311 is about 11006.7847712218. The cubic root of 121149311 is about 494.8121056760.

The spelling of 121149311 in words is "one hundred twenty-one million, one hundred forty-nine thousand, three hundred eleven".