12221854 has 16 divisors (see below), whose sum is σ = 18960480. Its totient is φ = 5904640.

The previous prime is 12221851. The next prime is 12221863. The reversal of 12221854 is 45812221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8607 + ... + 9925.

It is an arithmetic number, because the mean of its divisors is an integer number (1185030).

Almost surely, 2^12221854 is an apocalyptic number.

12221854 is a deficient number, since it is larger than the sum of its proper divisors (6738626).

12221854 is a wasteful number, since it uses less digits than its factorization.

12221854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475.

The product of its digits is 1280, while the sum is 25.

The square root of 12221854 is about 3495.9768305868. The cubic root of 12221854 is about 230.3451277304.

The spelling of 12221854 in words is "twelve million, two hundred twenty-one thousand, eight hundred fifty-four".