11126981 has 8 divisors (see below), whose sum is σ = 11779680. Its totient is φ = 10492272.

The previous prime is 11126977. The next prime is 11127001. The reversal of 11126981 is 18962111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11126981 - 2² = 11126977 is a prime.

It is a super-2 number, since 2×11126981² = 247619412348722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11126911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3215 + ... + 5708.

It is an arithmetic number, because the mean of its divisors is an integer number (1472460).

Almost surely, 2^11126981 is an apocalyptic number.

It is an amenable number.

11126981 is a deficient number, since it is larger than the sum of its proper divisors (652699).

11126981 is an equidigital number, since it uses as much as digits as its factorization.

11126981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8995.

The product of its digits is 864, while the sum is 29.

The square root of 11126981 is about 3335.7129672680. The cubic root of 11126981 is about 223.2505044198.

The spelling of 11126981 in words is "eleven million, one hundred twenty-six thousand, nine hundred eighty-one".