121195013 has 2 divisors, whose sum is σ = 121195014. Its totient is φ = 121195012.

The previous prime is 121195007. The next prime is 121195021. The reversal of 121195013 is 310591121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120077764 + 1117249 = 10958^2 + 1057^2 .

It is a cyclic number.

It is not a de Polignac number, because 121195013 - 2⁸ = 121194757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121195013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121195513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60597506 + 60597507.

It is an arithmetic number, because the mean of its divisors is an integer number (60597507).

Almost surely, 2^121195013 is an apocalyptic number.

It is an amenable number.

121195013 is a deficient number, since it is larger than the sum of its proper divisors (1).

121195013 is an equidigital number, since it uses as much as digits as its factorization.

121195013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 121195013 is about 11008.8606585786. The cubic root of 121195013 is about 494.8743183282.

The spelling of 121195013 in words is "one hundred twenty-one million, one hundred ninety-five thousand, thirteen".