222112211004 has 36 divisors (see below), whose sum is σ = 561643978896. Its totient is φ = 74011865088.

The previous prime is 222112211003. The next prime is 222112211017. The reversal of 222112211004 is 400112211222.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222112211003) 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, 958149 + ... + 1167164.

It is an arithmetic number, because the mean of its divisors is an integer number (15601221636).

Almost surely, 2^222112211004 is an apocalyptic number.

It is an amenable number.

222112211004 is an abundant number, since it is smaller than the sum of its proper divisors (339531767892).

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

222112211004 is a wasteful number, since it uses less digits than its factorization.

222112211004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128226 (or 2128221 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222112211004 its reverse (400112211222), we get a palindrome (622224422226).

The spelling of 222112211004 in words is "two hundred twenty-two billion, one hundred twelve million, two hundred eleven thousand, four".