1001255011 has 2 divisors, whose sum is σ = 1001255012. Its totient is φ = 1001255010.

The previous prime is 1001255009. The next prime is 1001255023. The reversal of 1001255011 is 1105521001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001255011 - 2¹ = 1001255009 is a prime.

It is a super-2 number, since 2×1001255011² = 2005023194105220242, which contains 22 as substring.

Together with 1001255009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1001255051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500627505 + 500627506.

It is an arithmetic number, because the mean of its divisors is an integer number (500627506).

Almost surely, 2^1001255011 is an apocalyptic number.

1001255011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001255011 is an equidigital number, since it uses as much as digits as its factorization.

1001255011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 1001255011 is about 31642.6138458883. The cubic root of 1001255011 is about 1000.4181621161.

Adding to 1001255011 its reverse (1105521001), we get a palindrome (2106776012).

The spelling of 1001255011 in words is "one billion, one million, two hundred fifty-five thousand, eleven".