2221001012222 has 16 divisors (see below), whose sum is σ = 3528469129680. Its totient is φ = 1044881559168.

The previous prime is 2221001012221. The next prime is 2221001012231. The reversal of 2221001012222 is 2222101001222.

It is a happy number.

It is a super-2 number, since 2×2221001012222² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 2221001012222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221001012221) 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, 9108773 + ... + 9349424.

It is an arithmetic number, because the mean of its divisors is an integer number (220529320605).

Almost surely, 2^{2221001012222} is an apocalyptic number.

2221001012222 is a deficient number, since it is larger than the sum of its proper divisors (1307468117458).

2221001012222 is a wasteful number, since it uses less digits than its factorization.

2221001012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18461755.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2221001012222 its reverse (2222101001222), we get a palindrome (4443102013444).

The spelling of 2221001012222 in words is "two trillion, two hundred twenty-one billion, one million, twelve thousand, two hundred twenty-two".