121113233309 has 2 divisors, whose sum is σ = 121113233310. Its totient is φ = 121113233308.

The previous prime is 121113233291. The next prime is 121113233321. The reversal of 121113233309 is 903332311121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71638128409 + 49475104900 = 267653^2 + 222430^2 .

It is a cyclic number.

It is not a de Polignac number, because 121113233309 - 2²⁴ = 121096456093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121113233809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556616654 + 60556616655.

It is an arithmetic number, because the mean of its divisors is an integer number (60556616655).

Almost surely, 2^121113233309 is an apocalyptic number.

It is an amenable number.

121113233309 is a deficient number, since it is larger than the sum of its proper divisors (1).

121113233309 is an equidigital number, since it uses as much as digits as its factorization.

121113233309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The spelling of 121113233309 in words is "one hundred twenty-one billion, one hundred thirteen million, two hundred thirty-three thousand, three hundred nine".