1201125131 has 2 divisors, whose sum is σ = 1201125132. Its totient is φ = 1201125130.

The previous prime is 1201125119. The next prime is 1201125139. The reversal of 1201125131 is 1315211021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201125131 - 2¹⁸ = 1200862987 is a prime.

It is a super-2 number, since 2×1201125131² = 2885403160639534322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1201125139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600562565 + 600562566.

It is an arithmetic number, because the mean of its divisors is an integer number (600562566).

Almost surely, 2^1201125131 is an apocalyptic number.

1201125131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201125131 is an equidigital number, since it uses as much as digits as its factorization.

1201125131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1201125131 is about 34657.2522136421. The cubic root of 1201125131 is about 1062.9905849091.

Adding to 1201125131 its reverse (1315211021), we get a palindrome (2516336152).

The spelling of 1201125131 in words is "one billion, two hundred one million, one hundred twenty-five thousand, one hundred thirty-one".