12022556 has 24 divisors (see below), whose sum is σ = 25895520. Its totient is φ = 4756032.

The previous prime is 12022531. The next prime is 12022561. The reversal of 12022556 is 65522021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16151 + ... + 16878.

It is an arithmetic number, because the mean of its divisors is an integer number (1078980).

Almost surely, 2^12022556 is an apocalyptic number.

It is an amenable number.

12022556 is an abundant number, since it is smaller than the sum of its proper divisors (13872964).

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

12022556 is a wasteful number, since it uses less digits than its factorization.

12022556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33053 (or 33051 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 12022556 is about 3467.3557648444. The cubic root of 12022556 is about 229.0862041415.

Adding to 12022556 its reverse (65522021), we get a palindrome (77544577).

The spelling of 12022556 in words is "twelve million, twenty-two thousand, five hundred fifty-six".