11299868981 has 2 divisors, whose sum is σ = 11299868982. Its totient is φ = 11299868980.

The previous prime is 11299868969. The next prime is 11299868999. The reversal of 11299868981 is 18986899211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8756280625 + 2543588356 = 93575^2 + 50434^2 .

It is a cyclic number.

It is not a de Polignac number, because 11299868981 - 2²⁶ = 11232760117 is a prime.

It is a super-2 number, since 2×11299868981² (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 (11299868381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5649934490 + 5649934491.

It is an arithmetic number, because the mean of its divisors is an integer number (5649934491).

Almost surely, 2^11299868981 is an apocalyptic number.

It is an amenable number.

11299868981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11299868981 is an equidigital number, since it uses as much as digits as its factorization.

11299868981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 62.

It can be divided in two parts, 11 and 299868981, that added together give a palindrome (299868992).

The spelling of 11299868981 in words is "eleven billion, two hundred ninety-nine million, eight hundred sixty-eight thousand, nine hundred eighty-one".