222212004 has 48 divisors (see below), whose sum is σ = 594198528. Its totient is φ = 63314208.

The previous prime is 222211943. The next prime is 222212009. The reversal of 222212004 is 400212222.

It is not an unprimeable number, because it can be changed into a prime (222212009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28719 + ... + 35625.

It is an arithmetic number, because the mean of its divisors is an integer number (12379136).

Almost surely, 2^222212004 is an apocalyptic number.

It is an amenable number.

222212004 is an abundant number, since it is smaller than the sum of its proper divisors (371986524).

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

222212004 is a wasteful number, since it uses less digits than its factorization.

222212004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7304 (or 7302 counting only the distinct ones).

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

The square root of 222212004 is about 14906.7771164662. Note that the first 3 decimals coincide. The cubic root of 222212004 is about 605.6975802641.

Adding to 222212004 its reverse (400212222), we get a palindrome (622424226).

It can be divided in two parts, 222 and 212004, that added together give a triangular number (212226 = T₆₅₁).

The spelling of 222212004 in words is "two hundred twenty-two million, two hundred twelve thousand, four".