1201020137 has 2 divisors, whose sum is σ = 1201020138. Its totient is φ = 1201020136.

The previous prime is 1201020127. The next prime is 1201020157. The reversal of 1201020137 is 7310201021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1191354256 + 9665881 = 34516^2 + 3109^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201020137 - 2¹⁴ = 1201003753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201020127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600510068 + 600510069.

It is an arithmetic number, because the mean of its divisors is an integer number (600510069).

Almost surely, 2^1201020137 is an apocalyptic number.

It is an amenable number.

1201020137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201020137 is an equidigital number, since it uses as much as digits as its factorization.

1201020137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1201020137 is about 34655.7374326388. The cubic root of 1201020137 is about 1062.9596109268.

Adding to 1201020137 its reverse (7310201021), we get a palindrome (8511221158).

The spelling of 1201020137 in words is "one billion, two hundred one million, twenty thousand, one hundred thirty-seven".