21041120 has 24 divisors (see below), whose sum is σ = 49710024. Its totient is φ = 8416384.

The previous prime is 21041117. The next prime is 21041191. The reversal of 21041120 is 2114012.

It is a congruent number.

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, 65594 + ... + 65913.

It is an arithmetic number, because the mean of its divisors is an integer number (2071251).

Almost surely, 2^21041120 is an apocalyptic number.

21041120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21041120 is an abundant number, since it is smaller than the sum of its proper divisors (28668904).

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

21041120 is a wasteful number, since it uses less digits than its factorization.

21041120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131522 (or 131514 counting only the distinct ones).

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

The square root of 21041120 is about 4587.0600606489. The cubic root of 21041120 is about 276.0723747745.

Adding to 21041120 its reverse (2114012), we get a palindrome (23155132).

The spelling of 21041120 in words is "twenty-one million, forty-one thousand, one hundred twenty".