21014120 has 16 divisors (see below), whose sum is σ = 47281860. Its totient is φ = 8405632.

The previous prime is 21014101. The next prime is 21014131. The reversal of 21014120 is 2141012.

It can be written as a sum of positive squares in 2 ways, for example, as 16957924 + 4056196 = 4118^2 + 2014^2 .

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, 262637 + ... + 262716.

Almost surely, 2^21014120 is an apocalyptic number.

21014120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21014120 is an abundant number, since it is smaller than the sum of its proper divisors (26267740).

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

21014120 is a wasteful number, since it uses less digits than its factorization.

21014120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525364 (or 525360 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 21014120 is about 4584.1160543773. The cubic root of 21014120 is about 275.9542387199.

Adding to 21014120 its reverse (2141012), we get a palindrome (23155132).

The spelling of 21014120 in words is "twenty-one million, fourteen thousand, one hundred twenty".