21114315 has 12 divisors (see below), whose sum is σ = 36598224. Its totient is φ = 11260944.

The previous prime is 21114307. The next prime is 21114319. The reversal of 21114315 is 51341112.

It is not a de Polignac number, because 21114315 - 2³ = 21114307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21114319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234559 + ... + 234648.

It is an arithmetic number, because the mean of its divisors is an integer number (3049852).

Almost surely, 2^21114315 is an apocalyptic number.

21114315 is a deficient number, since it is larger than the sum of its proper divisors (15483909).

21114315 is a wasteful number, since it uses less digits than its factorization.

21114315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469218 (or 469215 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 21114315 is about 4595.0315559308. The cubic root of 21114315 is about 276.3921253611.

Adding to 21114315 its reverse (51341112), we get a palindrome (72455427).

The spelling of 21114315 in words is "twenty-one million, one hundred fourteen thousand, three hundred fifteen".