222001031322 has 96 divisors (see below), whose sum is σ = 557816313600. Its totient is φ = 62500045824.

The previous prime is 222001031311. The next prime is 222001031327. The reversal of 222001031322 is 223130100222.

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

It is a junction number, because it is equal to n+sod(n) for n = 222001031295 and 222001031304.

It is not an unprimeable number, because it can be changed into a prime (222001031327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2759179 + ... + 2838497.

It is an arithmetic number, because the mean of its divisors is an integer number (5810586600).

Almost surely, 2^222001031322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222001031322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278908156800).

222001031322 is an abundant number, since it is smaller than the sum of its proper divisors (335815282278).

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

222001031322 is a wasteful number, since it uses less digits than its factorization.

222001031322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79660 (or 79657 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 222001031322 its reverse (223130100222), we get a palindrome (445131131544).

The spelling of 222001031322 in words is "two hundred twenty-two billion, one million, thirty-one thousand, three hundred twenty-two".