222321021220 has 48 divisors (see below), whose sum is σ = 494576832960. Its totient is φ = 83711332224.

The previous prime is 222321021191. The next prime is 222321021281. The reversal of 222321021220 is 22120123222.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 1803574 + ... + 1922893.

It is an arithmetic number, because the mean of its divisors is an integer number (10303684020).

Almost surely, 2^222321021220 is an apocalyptic number.

222321021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222321021220 is an abundant number, since it is smaller than the sum of its proper divisors (272255811740).

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

222321021220 is a wasteful number, since it uses less digits than its factorization.

222321021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726652 (or 3726650 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 222321021220 its reverse (22120123222), we get a palindrome (244441144442).

The spelling of 222321021220 in words is "two hundred twenty-two billion, three hundred twenty-one million, twenty-one thousand, two hundred twenty".