21113698 has 8 divisors (see below), whose sum is σ = 32071680. Its totient is φ = 10423140.

The previous prime is 21113689. The next prime is 21113707. The reversal of 21113698 is 89631112.

It is an interprime number because it is at equal distance from previous prime (21113689) and next prime (21113707).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66658 + ... + 66973.

It is an arithmetic number, because the mean of its divisors is an integer number (4008960).

Almost surely, 2^21113698 is an apocalyptic number.

21113698 is a deficient number, since it is larger than the sum of its proper divisors (10957982).

21113698 is a wasteful number, since it uses less digits than its factorization.

21113698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133712.

The product of its digits is 2592, while the sum is 31.

The square root of 21113698 is about 4594.9644177077. The cubic root of 21113698 is about 276.3894331023.

The spelling of 21113698 in words is "twenty-one million, one hundred thirteen thousand, six hundred ninety-eight".