222031221012 has 96 divisors (see below), whose sum is σ = 595350604800. Its totient is φ = 71484940800.

The previous prime is 222031220993. The next prime is 222031221023. The reversal of 222031221012 is 210122130222.

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

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 31 ways as a sum of consecutive naturals, for example, 1680664 + ... + 1807952.

It is an arithmetic number, because the mean of its divisors is an integer number (6201568800).

Almost surely, 2^222031221012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222031221012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297675302400).

222031221012 is an abundant number, since it is smaller than the sum of its proper divisors (373319383788).

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

222031221012 is a wasteful number, since it uses less digits than its factorization.

222031221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127854 (or 127846 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 222031221012 its reverse (210122130222), we get a palindrome (432153351234).

The spelling of 222031221012 in words is "two hundred twenty-two billion, thirty-one million, two hundred twenty-one thousand, twelve".