22222242220 has 24 divisors (see below), whose sum is σ = 46903603824. Its totient is φ = 8843774016.

The previous prime is 22222242209. The next prime is 22222242271. The reversal of 22222242220 is 2224222222.

It is a junction number, because it is equal to n+sod(n) for n = 22222242191 and 22222242200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2816142 + ... + 2824021.

It is an arithmetic number, because the mean of its divisors is an integer number (1954316826).

Almost surely, 2^22222242220 is an apocalyptic number.

22222242220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222242220 is an abundant number, since it is smaller than the sum of its proper divisors (24681361604).

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

22222242220 is a wasteful number, since it uses less digits than its factorization.

22222242220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5640369 (or 5640367 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 22222242220 its reverse (2224222222), we get a palindrome (24446464442).

The spelling of 22222242220 in words is "twenty-two billion, two hundred twenty-two million, two hundred forty-two thousand, two hundred twenty".