222221820040 has 64 divisors (see below), whose sum is σ = 550854198720. Its totient is φ = 80007840000.

The previous prime is 222221819993. The next prime is 222221820053. The reversal of 222221820040 is 40028122222.

It is a junction number, because it is equal to n+sod(n) for n = 222221819987 and 222221820014.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2455806 + ... + 2544685.

It is an arithmetic number, because the mean of its divisors is an integer number (8607096855).

Almost surely, 2^222221820040 is an apocalyptic number.

222221820040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222221820040 is an abundant number, since it is smaller than the sum of its proper divisors (328632378680).

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

222221820040 is a wasteful number, since it uses less digits than its factorization.

222221820040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000614 (or 5000610 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 222221820040 its reverse (40028122222), we get a palindrome (262249942262).

The spelling of 222221820040 in words is "two hundred twenty-two billion, two hundred twenty-one million, eight hundred twenty thousand, forty".