1251141011 has 2 divisors, whose sum is σ = 1251141012. Its totient is φ = 1251141010.

The previous prime is 1251140999. The next prime is 1251141043. The reversal of 1251141011 is 1101411521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1251141011 is a prime.

It is a super-2 number, since 2×1251141011² = 3130707658812204242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1251141071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625570505 + 625570506.

It is an arithmetic number, because the mean of its divisors is an integer number (625570506).

Almost surely, 2^1251141011 is an apocalyptic number.

1251141011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251141011 is an equidigital number, since it uses as much as digits as its factorization.

1251141011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 17.

The square root of 1251141011 is about 35371.4717109707. The cubic root of 1251141011 is about 1077.5450098284.

Adding to 1251141011 its reverse (1101411521), we get a palindrome (2352552532).

The spelling of 1251141011 in words is "one billion, two hundred fifty-one million, one hundred forty-one thousand, eleven".