21110514 has 16 divisors (see below), whose sum is σ = 42913920. Its totient is φ = 6921360.

The previous prime is 21110513. The next prime is 21110543. The reversal of 21110514 is 41501112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21110493 and 21110502.

It is not an unprimeable number, because it can be changed into a prime (21110513) 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, 28474 + ... + 29205.

It is an arithmetic number, because the mean of its divisors is an integer number (2682120).

Almost surely, 2^21110514 is an apocalyptic number.

21110514 is an abundant number, since it is smaller than the sum of its proper divisors (21803406).

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

21110514 is a wasteful number, since it uses less digits than its factorization.

21110514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57745.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 21110514 is about 4594.6179384145. The cubic root of 21110514 is about 276.3755389912.

Adding to 21110514 its reverse (41501112), we get a palindrome (62611626).

The spelling of 21110514 in words is "twenty-one million, one hundred ten thousand, five hundred fourteen".