12051222 has 24 divisors (see below), whose sum is σ = 24560376. Its totient is φ = 3942144.

The previous prime is 12051209. The next prime is 12051227. The reversal of 12051222 is 22215021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12051227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20598 + ... + 21174.

It is an arithmetic number, because the mean of its divisors is an integer number (1023349).

Almost surely, 2^12051222 is an apocalyptic number.

12051222 is an abundant number, since it is smaller than the sum of its proper divisors (12509154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12051222 is an equidigital number, since it uses as much as digits as its factorization.

12051222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 12051222 is about 3471.4870012719. The cubic root of 12051222 is about 229.2681336385.

Adding to 12051222 its reverse (22215021), we get a palindrome (34266243).

The spelling of 12051222 in words is "twelve million, fifty-one thousand, two hundred twenty-two".