12021116 has 6 divisors (see below), whose sum is σ = 21036960. Its totient is φ = 6010556.

The previous prime is 12021071. The next prime is 12021131. The reversal of 12021116 is 61112021.

It is a self number, because there is not a number n which added to its sum of digits gives 12021116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1502636 + ... + 1502643.

It is an arithmetic number, because the mean of its divisors is an integer number (3506160).

Almost surely, 2^12021116 is an apocalyptic number.

It is an amenable number.

12021116 is a deficient number, since it is larger than the sum of its proper divisors (9015844).

12021116 is a wasteful number, since it uses less digits than its factorization.

12021116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005283 (or 3005281 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 12021116 is about 3467.1481075951. The cubic root of 12021116 is about 229.0770575201.

Adding to 12021116 its reverse (61112021), we get a palindrome (73133137).

The spelling of 12021116 in words is "twelve million, twenty-one thousand, one hundred sixteen".