121122313111 has 2 divisors, whose sum is σ = 121122313112. Its totient is φ = 121122313110.

The previous prime is 121122313051. The next prime is 121122313211. The reversal of 121122313111 is 111313221121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121122313111 is a prime.

It is a super-2 number, since 2×121122313111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121122313211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561156555 + 60561156556.

It is an arithmetic number, because the mean of its divisors is an integer number (60561156556).

Almost surely, 2^121122313111 is an apocalyptic number.

121122313111 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122313111 is an equidigital number, since it uses as much as digits as its factorization.

121122313111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 19.

Adding to 121122313111 its reverse (111313221121), we get a palindrome (232435534232).

The spelling of 121122313111 in words is "one hundred twenty-one billion, one hundred twenty-two million, three hundred thirteen thousand, one hundred eleven".