121112118997 has 2 divisors, whose sum is σ = 121112118998. Its totient is φ = 121112118996.

The previous prime is 121112118943. The next prime is 121112119111. The reversal of 121112118997 is 799811211121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118417886161 + 2694232836 = 344119^2 + 51906^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121112118997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121112718997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556059498 + 60556059499.

It is an arithmetic number, because the mean of its divisors is an integer number (60556059499).

Almost surely, 2^121112118997 is an apocalyptic number.

It is an amenable number.

121112118997 is a deficient number, since it is larger than the sum of its proper divisors (1).

121112118997 is an equidigital number, since it uses as much as digits as its factorization.

121112118997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 43.

The spelling of 121112118997 in words is "one hundred twenty-one billion, one hundred twelve million, one hundred eighteen thousand, nine hundred ninety-seven".