21132110 has 8 divisors (see below), whose sum is σ = 38037816. Its totient is φ = 8452840.

The previous prime is 21132103. The next prime is 21132119. The reversal of 21132110 is 1123112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21132091 and 21132100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056596 + ... + 1056615.

It is an arithmetic number, because the mean of its divisors is an integer number (4754727).

Almost surely, 2^21132110 is an apocalyptic number.

21132110 is a deficient number, since it is larger than the sum of its proper divisors (16905706).

21132110 is a wasteful number, since it uses less digits than its factorization.

21132110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113218.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 21132110 is about 4596.9674786755. The cubic root of 21132110 is about 276.4697506876.

Adding to 21132110 its reverse (1123112), we get a palindrome (22255222).

The spelling of 21132110 in words is "twenty-one million, one hundred thirty-two thousand, one hundred ten".