21119812 has 12 divisors (see below), whose sum is σ = 42239680. Its totient is φ = 9051336.

The previous prime is 21119803. The next prime is 21119827. The reversal of 21119812 is 21891112.

21119812 is an admirable 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, 377112 + ... + 377167.

Almost surely, 2^21119812 is an apocalyptic number.

It is an amenable number.

21119812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21119812 is a wasteful number, since it uses less digits than its factorization.

21119812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754290 (or 754288 counting only the distinct ones).

The product of its digits is 288, while the sum is 25.

The square root of 21119812 is about 4595.6296630603. The cubic root of 21119812 is about 276.4161090215.

The spelling of 21119812 in words is "twenty-one million, one hundred nineteen thousand, eight hundred twelve".