21112076 has 12 divisors (see below), whose sum is σ = 36978480. Its totient is φ = 10546800.

The previous prime is 21112061. The next prime is 21112081. The reversal of 21112076 is 67021112.

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, 7001 + ... + 9551.

It is an arithmetic number, because the mean of its divisors is an integer number (3081540).

Almost surely, 2^21112076 is an apocalyptic number.

It is an amenable number.

21112076 is a deficient number, since it is larger than the sum of its proper divisors (15866404).

21112076 is a wasteful number, since it uses less digits than its factorization.

21112076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624 (or 4622 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 21112076 is about 4594.7879167596. The cubic root of 21112076 is about 276.3823553095.

Adding to 21112076 its reverse (67021112), we get a palindrome (88133188).

The spelling of 21112076 in words is "twenty-one million, one hundred twelve thousand, seventy-six".