121311293 has 2 divisors, whose sum is σ = 121311294. Its totient is φ = 121311292.

The previous prime is 121311287. The next prime is 121311313. The reversal of 121311293 is 392113121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121044004 + 267289 = 11002^2 + 517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121311293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121311193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60655646 + 60655647.

It is an arithmetic number, because the mean of its divisors is an integer number (60655647).

Almost surely, 2^121311293 is an apocalyptic number.

It is an amenable number.

121311293 is a deficient number, since it is larger than the sum of its proper divisors (1).

121311293 is an equidigital number, since it uses as much as digits as its factorization.

121311293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 23.

The square root of 121311293 is about 11014.1405928924. The cubic root of 121311293 is about 495.0325360378.

The spelling of 121311293 in words is "one hundred twenty-one million, three hundred eleven thousand, two hundred ninety-three".