21110094 has 12 divisors (see below), whose sum is σ = 45738576. Its totient is φ = 7036692.

The previous prime is 21110093. The next prime is 21110099. The reversal of 21110094 is 49001112.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1172783 = 21110094 / (2 + 1 + 1 + 1 + 0 + 0 + 9 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110093) 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 5 ways as a sum of consecutive naturals, for example, 586374 + ... + 586409.

It is an arithmetic number, because the mean of its divisors is an integer number (3811548).

Almost surely, 2^21110094 is an apocalyptic number.

21110094 is an abundant number, since it is smaller than the sum of its proper divisors (24628482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110094 is a wasteful number, since it uses less digits than its factorization.

21110094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172791 (or 1172788 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 21110094 is about 4594.5722325370. The cubic root of 21110094 is about 276.3737061210.

The spelling of 21110094 in words is "twenty-one million, one hundred ten thousand, ninety-four".