222221100012 has 96 divisors (see below), whose sum is σ = 541190065920. Its totient is φ = 70902501120.

The previous prime is 222221100001. The next prime is 222221100029. The reversal of 222221100012 is 210001122222.

It is a junction number, because it is equal to n+sod(n) for n = 222221099964 and 222221100000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24656587 + ... + 24665597.

It is an arithmetic number, because the mean of its divisors is an integer number (5637396520).

Almost surely, 2^222221100012 is an apocalyptic number.

It is an amenable number.

222221100012 is an abundant number, since it is smaller than the sum of its proper divisors (318968965908).

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

222221100012 is a wasteful number, since it uses less digits than its factorization.

222221100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9951 (or 9949 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222221100012 its reverse (210001122222), we get a palindrome (432222222234).

The spelling of 222221100012 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred thousand, twelve".