121455133 has 2 divisors, whose sum is σ = 121455134. Its totient is φ = 121455132.

The previous prime is 121455109. The next prime is 121455149. The reversal of 121455133 is 331554121.

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., 81234169 + 40220964 = 9013^2 + 6342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121455133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121455098 and 121455107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121455193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60727566 + 60727567.

It is an arithmetic number, because the mean of its divisors is an integer number (60727567).

Almost surely, 2^121455133 is an apocalyptic number.

It is an amenable number.

121455133 is a deficient number, since it is larger than the sum of its proper divisors (1).

121455133 is an equidigital number, since it uses as much as digits as its factorization.

121455133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 25.

The square root of 121455133 is about 11020.6684461515. The cubic root of 121455133 is about 495.2281137501.

The spelling of 121455133 in words is "one hundred twenty-one million, four hundred fifty-five thousand, one hundred thirty-three".