121465189 has 2 divisors, whose sum is σ = 121465190. Its totient is φ = 121465188.

The previous prime is 121465151. The next prime is 121465193. The reversal of 121465189 is 981564121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63202500 + 58262689 = 7950^2 + 7633^2 .

It is a cyclic number.

It is not a de Polignac number, because 121465189 - 2²¹ = 119368037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121465109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60732594 + 60732595.

It is an arithmetic number, because the mean of its divisors is an integer number (60732595).

Almost surely, 2^121465189 is an apocalyptic number.

It is an amenable number.

121465189 is a deficient number, since it is larger than the sum of its proper divisors (1).

121465189 is an equidigital number, since it uses as much as digits as its factorization.

121465189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 121465189 is about 11021.1246703773. The cubic root of 121465189 is about 495.2417810096.

The spelling of 121465189 in words is "one hundred twenty-one million, four hundred sixty-five thousand, one hundred eighty-nine".