222111221022 has 24 divisors (see below), whose sum is σ = 481636458576. Its totient is φ = 73976230656.

The previous prime is 222111220957. The next prime is 222111221029. The reversal of 222111221022 is 220122111222.

It is a happy number.

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 = 222111220986 and 222111221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222111221029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5047738 + ... + 5091549.

It is an arithmetic number, because the mean of its divisors is an integer number (20068185774).

Almost surely, 2^222111221022 is an apocalyptic number.

222111221022 is an abundant number, since it is smaller than the sum of its proper divisors (259525237554).

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

222111221022 is a wasteful number, since it uses less digits than its factorization.

222111221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140512 (or 10140509 counting only the distinct ones).

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

Adding to 222111221022 its reverse (220122111222), we get a palindrome (442233332244).

The spelling of 222111221022 in words is "two hundred twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, twenty-two".