121319137 has 2 divisors, whose sum is σ = 121319138. Its totient is φ = 121319136.

The previous prime is 121319131. The next prime is 121319141. The reversal of 121319137 is 731913121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108076816 + 13242321 = 10396^2 + 3639^2 .

It is a cyclic number.

It is not a de Polignac number, because 121319137 - 2³ = 121319129 is a prime.

It is not a weakly prime, because it can be changed into another prime (121319131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60659568 + 60659569.

It is an arithmetic number, because the mean of its divisors is an integer number (60659569).

Almost surely, 2^121319137 is an apocalyptic number.

It is an amenable number.

121319137 is a deficient number, since it is larger than the sum of its proper divisors (1).

121319137 is an equidigital number, since it uses as much as digits as its factorization.

121319137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 28.

The square root of 121319137 is about 11014.4966748372. The cubic root of 121319137 is about 495.0432054251.

The spelling of 121319137 in words is "one hundred twenty-one million, three hundred nineteen thousand, one hundred thirty-seven".