2201221212222 has 16 divisors (see below), whose sum is σ = 4431597674112. Its totient is φ = 728881195800.

The previous prime is 2201221212221. The next prime is 2201221212233. The reversal of 2201221212222 is 2222121221022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201221212221) 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, 1214801088 + ... + 1214802899.

It is an arithmetic number, because the mean of its divisors is an integer number (276974854632).

Almost surely, 2^{2201221212222} is an apocalyptic number.

2201221212222 is an abundant number, since it is smaller than the sum of its proper divisors (2230376461890).

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

2201221212222 is a wasteful number, since it uses less digits than its factorization.

2201221212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429604143.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2201221212222 its reverse (2222121221022), we get a palindrome (4423342433244).

The spelling of 2201221212222 in words is "two trillion, two hundred one billion, two hundred twenty-one million, two hundred twelve thousand, two hundred twenty-two".