12220052 has 18 divisors (see below), whose sum is σ = 23157918. Its totient is φ = 5639712.

The previous prime is 12220037. The next prime is 12220081. The reversal of 12220052 is 25002221.

It can be written as a sum of positive squares in 3 ways, for example, as 1157776 + 11062276 = 1076^2 + 3326^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8363 + ... + 9714.

It is an arithmetic number, because the mean of its divisors is an integer number (1286551).

Almost surely, 2^12220052 is an apocalyptic number.

It is an amenable number.

12220052 is a deficient number, since it is larger than the sum of its proper divisors (10937866).

12220052 is a wasteful number, since it uses less digits than its factorization.

12220052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18107 (or 18092 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 12220052 is about 3495.7190962662. The cubic root of 12220052 is about 230.3338064169. Note that the first 3 decimals are identical.

Adding to 12220052 its reverse (25002221), we get a palindrome (37222273).

The spelling of 12220052 in words is "twelve million, two hundred twenty thousand, fifty-two".