221030022222 has 24 divisors (see below), whose sum is σ = 478909328976. Its totient is φ = 73674989856.

The previous prime is 221030022203. The next prime is 221030022223. The reversal of 221030022222 is 222220030122.

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 = 221030022195 and 221030022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221030022223) 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, 862663 + ... + 1089149.

It is an arithmetic number, because the mean of its divisors is an integer number (19954555374).

Almost surely, 2^221030022222 is an apocalyptic number.

221030022222 is an abundant number, since it is smaller than the sum of its proper divisors (257879306754).

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

221030022222 is a wasteful number, since it uses less digits than its factorization.

221030022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280712 (or 280709 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 221030022222 its reverse (222220030122), we get a palindrome (443250052344).

The spelling of 221030022222 in words is "two hundred twenty-one billion, thirty million, twenty-two thousand, two hundred twenty-two".