12220022 has 4 divisors (see below), whose sum is σ = 18330036. Its totient is φ = 6110010.

The previous prime is 12220003. The next prime is 12220031. The reversal of 12220022 is 22002221.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 12219985 and 12220012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055004 + ... + 3055007.

It is an arithmetic number, because the mean of its divisors is an integer number (4582509).

Almost surely, 2^12220022 is an apocalyptic number.

12220022 is a deficient number, since it is larger than the sum of its proper divisors (6110014).

12220022 is an equidigital number, since it uses as much as digits as its factorization.

12220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110013.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 12220022 is about 3495.7148053009. The cubic root of 12220022 is about 230.3336179284. Note that the first 3 decimals are identical.

Adding to 12220022 its reverse (22002221), we get a palindrome (34222243).

The spelling of 12220022 in words is "twelve million, two hundred twenty thousand, twenty-two".