222131004 has 12 divisors (see below), whose sum is σ = 518305704. Its totient is φ = 74043664.

The previous prime is 222130999. The next prime is 222131023. The reversal of 222131004 is 400131222.

222131004 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

222131004 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9255447 + ... + 9255470.

It is an arithmetic number, because the mean of its divisors is an integer number (43192142).

Almost surely, 2^222131004 is an apocalyptic number.

It is an amenable number.

222131004 is an abundant number, since it is smaller than the sum of its proper divisors (296174700).

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

222131004 is a wasteful number, since it uses less digits than its factorization.

222131004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18510924 (or 18510922 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 222131004 is about 14904.0599837762. The cubic root of 222131004 is about 605.6239756799.

Adding to 222131004 its reverse (400131222), we get a palindrome (622262226).

The spelling of 222131004 in words is "two hundred twenty-two million, one hundred thirty-one thousand, four".