12201056 has 24 divisors (see below), whose sum is σ = 27452880. Its totient is φ = 5228928.

The previous prime is 12201043. The next prime is 12201061. The reversal of 12201056 is 65010221.

It is a congruent 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, 27011 + ... + 27458.

It is an arithmetic number, because the mean of its divisors is an integer number (1143870).

Almost surely, 2^12201056 is an apocalyptic number.

12201056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12201056 is an abundant number, since it is smaller than the sum of its proper divisors (15251824).

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

12201056 is an equidigital number, since it uses as much as digits as its factorization.

12201056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54486 (or 54478 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 12201056 is about 3493.0010020039. The cubic root of 12201056 is about 230.2143936644.

Adding to 12201056 its reverse (65010221), we get a palindrome (77211277).

The spelling of 12201056 in words is "twelve million, two hundred one thousand, fifty-six".