2012151257 has 2 divisors, whose sum is σ = 2012151258. Its totient is φ = 2012151256.

The previous prime is 2012151241. The next prime is 2012151259. The reversal of 2012151257 is 7521512102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2001757081 + 10394176 = 44741^2 + 3224^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012151257 - 2⁴ = 2012151241 is a prime.

Together with 2012151259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2012151259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006075628 + 1006075629.

It is an arithmetic number, because the mean of its divisors is an integer number (1006075629).

Almost surely, 2^2012151257 is an apocalyptic number.

It is an amenable number.

2012151257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012151257 is an equidigital number, since it uses as much as digits as its factorization.

2012151257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 2012151257 is about 44857.0090063972. The cubic root of 2012151257 is about 1262.4675038134.

Adding to 2012151257 its reverse (7521512102), we get a palindrome (9533663359).

The spelling of 2012151257 in words is "two billion, twelve million, one hundred fifty-one thousand, two hundred fifty-seven".