21114401 has 8 divisors (see below), whose sum is σ = 26324544. Its totient is φ = 16452720.

The previous prime is 21114397. The next prime is 21114403. The reversal of 21114401 is 10441112.

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 21114401 - 2² = 21114397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21114403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137030 + ... + 137183.

It is an arithmetic number, because the mean of its divisors is an integer number (3290568).

Almost surely, 2^21114401 is an apocalyptic number.

It is an amenable number.

21114401 is a deficient number, since it is larger than the sum of its proper divisors (5210143).

21114401 is a wasteful number, since it uses less digits than its factorization.

21114401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274231.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 21114401 is about 4595.0409138548. The cubic root of 21114401 is about 276.3925006151.

Adding to 21114401 its reverse (10441112), we get a palindrome (31555513).

Subtracting from 21114401 its reverse (10441112), we obtain a square (10673289 = 3267²).

The spelling of 21114401 in words is "twenty-one million, one hundred fourteen thousand, four hundred one".