21376113 has 16 divisors (see below), whose sum is σ = 31622400. Its totient is φ = 12734480.

The previous prime is 21376093. The next prime is 21376133. The reversal of 21376113 is 31167312.

It is an interprime number because it is at equal distance from previous prime (21376093) and next prime (21376133).

It is not a de Polignac number, because 21376113 - 2⁶ = 21376049 is a prime.

It is a super-4 number, since 4×21376113⁴ (a number of 30 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (21376133) 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 15 ways as a sum of consecutive naturals, for example, 3543 + ... + 7436.

It is an arithmetic number, because the mean of its divisors is an integer number (1976400).

Almost surely, 2^21376113 is an apocalyptic number.

It is an amenable number.

21376113 is a deficient number, since it is larger than the sum of its proper divisors (10246287).

21376113 is a wasteful number, since it uses less digits than its factorization.

21376113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11052.

The product of its digits is 756, while the sum is 24.

The square root of 21376113 is about 4623.4308689544. The cubic root of 21376113 is about 277.5297719863.

The spelling of 21376113 in words is "twenty-one million, three hundred seventy-six thousand, one hundred thirteen".