121155222911 has 2 divisors, whose sum is σ = 121155222912. Its totient is φ = 121155222910.

The previous prime is 121155222893. The next prime is 121155222913. The reversal of 121155222911 is 119222551121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121155222911 - 2¹⁴ = 121155206527 is a prime.

It is a super-2 number, since 2×121155222911² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 121155222913, 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 (121155222913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60577611455 + 60577611456.

It is an arithmetic number, because the mean of its divisors is an integer number (60577611456).

Almost surely, 2^121155222911 is an apocalyptic number.

121155222911 is a deficient number, since it is larger than the sum of its proper divisors (1).

121155222911 is an equidigital number, since it uses as much as digits as its factorization.

121155222911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 32.

The spelling of 121155222911 in words is "one hundred twenty-one billion, one hundred fifty-five million, two hundred twenty-two thousand, nine hundred eleven".