11142442511 has 2 divisors, whose sum is σ = 11142442512. Its totient is φ = 11142442510.

The previous prime is 11142442501. The next prime is 11142442541. The reversal of 11142442511 is 11524424111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11142442511 - 2¹⁸ = 11142180367 is a prime.

It is a super-2 number, since 2×11142442511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11142442501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5571221255 + 5571221256.

It is an arithmetic number, because the mean of its divisors is an integer number (5571221256).

Almost surely, 2^11142442511 is an apocalyptic number.

11142442511 is a deficient number, since it is larger than the sum of its proper divisors (1).

11142442511 is an equidigital number, since it uses as much as digits as its factorization.

11142442511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280, while the sum is 26.

Adding to 11142442511 its reverse (11524424111), we get a palindrome (22666866622).

The spelling of 11142442511 in words is "eleven billion, one hundred forty-two million, four hundred forty-two thousand, five hundred eleven".