11110051099981 has 4 divisors (see below), whose sum is σ = 11110098948700. Its totient is φ = 11110003251264.

The previous prime is 11110051099879. The next prime is 11110051100009. The reversal of 11110051099981 is 18999015001111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2151648922500 + 8958402177481 = 1466850^2 + 2993059^2 .

It is a cyclic number.

It is not a de Polignac number, because 11110051099981 - 2¹⁹ = 11110050575693 is a prime.

It is a super-2 number, since 2×11110051099981² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110051090981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23574366 + ... + 24041023.

It is an arithmetic number, because the mean of its divisors is an integer number (2777524737175).

Almost surely, 2^{11110051099981} is an apocalyptic number.

It is an amenable number.

11110051099981 is a deficient number, since it is larger than the sum of its proper divisors (47848719).

11110051099981 is an equidigital number, since it uses as much as digits as its factorization.

11110051099981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47848718.

The product of its (nonzero) digits is 29160, while the sum is 46.

The spelling of 11110051099981 in words is "eleven trillion, one hundred ten billion, fifty-one million, ninety-nine thousand, nine hundred eighty-one".