121293149 has 2 divisors, whose sum is σ = 121293150. Its totient is φ = 121293148.

The previous prime is 121293127. The next prime is 121293157. The reversal of 121293149 is 941392121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116532025 + 4761124 = 10795^2 + 2182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121293149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121293119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60646574 + 60646575.

It is an arithmetic number, because the mean of its divisors is an integer number (60646575).

Almost surely, 2^121293149 is an apocalyptic number.

It is an amenable number.

121293149 is a deficient number, since it is larger than the sum of its proper divisors (1).

121293149 is an equidigital number, since it uses as much as digits as its factorization.

121293149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 121293149 is about 11013.3168936520. The cubic root of 121293149 is about 495.0078548561.

The spelling of 121293149 in words is "one hundred twenty-one million, two hundred ninety-three thousand, one hundred forty-nine".