21110160 has 40 divisors (see below), whose sum is σ = 65442240. Its totient is φ = 5629312.

The previous prime is 21110149. The next prime is 21110179. The reversal of 21110160 is 6101112.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43740 + ... + 44219.

It is an arithmetic number, because the mean of its divisors is an integer number (1636056).

Almost surely, 2^21110160 is an apocalyptic number.

21110160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21110160 is an abundant number, since it is smaller than the sum of its proper divisors (44332080).

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

21110160 is a wasteful number, since it uses less digits than its factorization.

21110160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87975 (or 87969 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 21110160 is about 4594.5794149193. The cubic root of 21110160 is about 276.3739941451.

Adding to 21110160 its reverse (6101112), we get a palindrome (27211272).

The spelling of 21110160 in words is "twenty-one million, one hundred ten thousand, one hundred sixty".