12221876 has 12 divisors (see below), whose sum is σ = 22126020. Its totient is φ = 5900160.

The previous prime is 12221863. The next prime is 12221887. The reversal of 12221876 is 67812221.

It can be written as a sum of positive squares in 2 ways, for example, as 8702500 + 3519376 = 2950^2 + 1876^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 52565 + ... + 52796.

It is an arithmetic number, because the mean of its divisors is an integer number (1843835).

Almost surely, 2^12221876 is an apocalyptic number.

It is an amenable number.

12221876 is a deficient number, since it is larger than the sum of its proper divisors (9904144).

12221876 is a wasteful number, since it uses less digits than its factorization.

12221876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105394 (or 105392 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 12221876 is about 3495.9799770594. The cubic root of 12221876 is about 230.3452659416.

The spelling of 12221876 in words is "twelve million, two hundred twenty-one thousand, eight hundred seventy-six".