222221110020 has 192 divisors, whose sum is σ = 772835965440. Its totient is φ = 46455939072.

The previous prime is 222221109989. The next prime is 222221110057. The reversal of 222221110020 is 20011122222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 408444 + ... + 781836.

It is an arithmetic number, because the mean of its divisors is an integer number (4025187320).

Almost surely, 2^222221110020 is an apocalyptic number.

222221110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222221110020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386417982720).

222221110020 is an abundant number, since it is smaller than the sum of its proper divisors (550614855420).

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

222221110020 is a wasteful number, since it uses less digits than its factorization.

222221110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373534 (or 373532 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222221110020 its reverse (20011122222), we get a palindrome (242232232242).

The spelling of 222221110020 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred ten thousand, twenty".