11110400021 has 16 divisors (see below), whose sum is σ = 12756480000. Its totient is φ = 9479103408.

The previous prime is 11110400009. The next prime is 11110400023. The reversal of 11110400021 is 12000401111.

It is a cyclic number.

It is not a de Polignac number, because 11110400021 - 2⁶ = 11110399957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11110399975 and 11110400011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110400023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3678650 + ... + 3681668.

It is an arithmetic number, because the mean of its divisors is an integer number (797280000).

Almost surely, 2^11110400021 is an apocalyptic number.

It is an amenable number.

11110400021 is a deficient number, since it is larger than the sum of its proper divisors (1646079979).

11110400021 is a wasteful number, since it uses less digits than its factorization.

11110400021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5288.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11110400021 its reverse (12000401111), we get a palindrome (23110801132).

The spelling of 11110400021 in words is "eleven billion, one hundred ten million, four hundred thousand, twenty-one".