221111222022 has 48 divisors (see below), whose sum is σ = 504763983360. Its totient is φ = 69758795376.

The previous prime is 221111221999. The next prime is 221111222047. The reversal of 221111222022 is 220222111122.

It is a happy number.

221111222022 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221111221986 and 221111222004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59443 + ... + 667649.

It is an arithmetic number, because the mean of its divisors is an integer number (10515916320).

Almost surely, 2^221111222022 is an apocalyptic number.

221111222022 is an abundant number, since it is smaller than the sum of its proper divisors (283652761338).

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

221111222022 is a wasteful number, since it uses less digits than its factorization.

221111222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609297 (or 609294 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221111222022 its reverse (220222111122), we get a palindrome (441333333144).

The spelling of 221111222022 in words is "two hundred twenty-one billion, one hundred eleven million, two hundred twenty-two thousand, twenty-two".