22001220222 has 16 divisors (see below), whose sum is σ = 44101774080. Its totient is φ = 7317184472.

The previous prime is 22001220217. The next prime is 22001220229. The reversal of 22001220222 is 22202210022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001220229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4136022 + ... + 4141337.

It is an arithmetic number, because the mean of its divisors is an integer number (2756360880).

Almost surely, 2^22001220222 is an apocalyptic number.

22001220222 is an abundant number, since it is smaller than the sum of its proper divisors (22100553858).

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

22001220222 is a wasteful number, since it uses less digits than its factorization.

22001220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8277807.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 22001220222 its reverse (22202210022), we get a palindrome (44203430244).

The spelling of 22001220222 in words is "twenty-two billion, one million, two hundred twenty thousand, two hundred twenty-two".