12402222 has 16 divisors (see below), whose sum is σ = 28348032. Its totient is φ = 3543480.

The previous prime is 12402217. The next prime is 12402223. The reversal of 12402222 is 22220421.

It is a super-2 number, since 2×12402222² = 307630221074568, which contains 22 as substring.

12402222 is a modest number, since divided by 2222 gives 1240 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402223) 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, 147604 + ... + 147687.

It is an arithmetic number, because the mean of its divisors is an integer number (1771752).

Almost surely, 2^12402222 is an apocalyptic number.

12402222 is an abundant number, since it is smaller than the sum of its proper divisors (15945810).

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

12402222 is a wasteful number, since it uses less digits than its factorization.

12402222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295303.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 12402222 is about 3521.6788609980. The cubic root of 12402222 is about 231.4727299411.

Adding to 12402222 its reverse (22220421), we get a palindrome (34622643).

The spelling of 12402222 in words is "twelve million, four hundred two thousand, two hundred twenty-two".