121455013 has 2 divisors, whose sum is σ = 121455014. Its totient is φ = 121455012.

The previous prime is 121454989. The next prime is 121455067. The reversal of 121455013 is 310554121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83484769 + 37970244 = 9137^2 + 6162^2 .

It is a cyclic number.

It is not a de Polignac number, because 121455013 - 2²⁵ = 87900581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121455713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60727506 + 60727507.

It is an arithmetic number, because the mean of its divisors is an integer number (60727507).

Almost surely, 2^121455013 is an apocalyptic number.

It is an amenable number.

121455013 is a deficient number, since it is larger than the sum of its proper divisors (1).

121455013 is an equidigital number, since it uses as much as digits as its factorization.

121455013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 121455013 is about 11020.6630018343. The cubic root of 121455013 is about 495.2279506517.

The spelling of 121455013 in words is "one hundred twenty-one million, four hundred fifty-five thousand, thirteen".