222221121011022 has 192 divisors, whose sum is σ = 527000413814784. Its totient is φ = 61174308948480.

The previous prime is 222221121011011. The next prime is 222221121011063. The reversal of 222221121011022 is 220110121122222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 222221121011022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2030604418 + ... + 2030713850.

It is an arithmetic number, because the mean of its divisors is an integer number (2744793821952).

Almost surely, 2^{222221121011022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222221121011022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263500206907392).

222221121011022 is an abundant number, since it is smaller than the sum of its proper divisors (304779292803762).

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

222221121011022 is a wasteful number, since it uses less digits than its factorization.

222221121011022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109791 (or 109712 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222221121011022 its reverse (220110121122222), we get a palindrome (442331242133244).

The spelling of 222221121011022 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred twenty-one million, eleven thousand, twenty-two".