2221221212022 has 32 divisors (see below), whose sum is σ = 4586130745344. Its totient is φ = 716463014400.

The previous prime is 2221221212011. The next prime is 2221221212029. The reversal of 2221221212022 is 2202121221222.

It is a self number, because there is not a number n which added to its sum of digits gives 2221221212022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221221212029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1756447 + ... + 2743637.

It is an arithmetic number, because the mean of its divisors is an integer number (143316585792).

Almost surely, 2^{2221221212022} is an apocalyptic number.

2221221212022 is an abundant number, since it is smaller than the sum of its proper divisors (2364909533322).

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

2221221212022 is a wasteful number, since it uses less digits than its factorization.

2221221212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999324.

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

Adding to 2221221212022 its reverse (2202121221222), we get a palindrome (4423342433244).

The spelling of 2221221212022 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred twelve thousand, twenty-two".