12221853 has 32 divisors (see below), whose sum is σ = 19353600. Its totient is φ = 6716736.

The previous prime is 12221851. The next prime is 12221863. The reversal of 12221853 is 35812221.

It is not a de Polignac number, because 12221853 - 2¹ = 12221851 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 87858 + ... + 87996.

It is an arithmetic number, because the mean of its divisors is an integer number (604800).

Almost surely, 2^12221853 is an apocalyptic number.

It is an amenable number.

12221853 is a deficient number, since it is larger than the sum of its proper divisors (7131747).

12221853 is a wasteful number, since it uses less digits than its factorization.

12221853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281.

The product of its digits is 960, while the sum is 24.

The square root of 12221853 is about 3495.9766875653. The cubic root of 12221853 is about 230.3451214481.

The spelling of 12221853 in words is "twelve million, two hundred twenty-one thousand, eight hundred fifty-three".