222423012 has 36 divisors (see below), whose sum is σ = 642556096. Its totient is φ = 63549360.

The previous prime is 222422989. The next prime is 222423029. The reversal of 222423012 is 210324222.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 441064 + ... + 441567.

Almost surely, 2^222423012 is an apocalyptic number.

It is an amenable number.

222423012 is an abundant number, since it is smaller than the sum of its proper divisors (420133084).

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

222423012 is a wasteful number, since it uses less digits than its factorization.

222423012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882648 (or 882643 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 222423012 is about 14913.8530232801. The cubic root of 222423012 is about 605.8892389800.

Adding to 222423012 its reverse (210324222), we get a palindrome (432747234).

The spelling of 222423012 in words is "two hundred twenty-two million, four hundred twenty-three thousand, twelve".