12220855 has 8 divisors (see below), whose sum is σ = 14706000. Its totient is φ = 9749376.

The previous prime is 12220853. The next prime is 12220877. The reversal of 12220855 is 55802221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12220855 - 2¹ = 12220853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220853) 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, 1330 + ... + 5119.

It is an arithmetic number, because the mean of its divisors is an integer number (1838250).

Almost surely, 2^12220855 is an apocalyptic number.

12220855 is a deficient number, since it is larger than the sum of its proper divisors (2485145).

12220855 is an equidigital number, since it uses as much as digits as its factorization.

12220855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6833.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 12220855 is about 3495.8339491458. The cubic root of 12220855 is about 230.3388515126.

The spelling of 12220855 in words is "twelve million, two hundred twenty thousand, eight hundred fifty-five".