222221201221220 has 24 divisors (see below), whose sum is σ = 467135425252608. Its totient is φ = 88798784738400.

The previous prime is 222221201221199. The next prime is 222221201221237. The reversal of 222221201221220 is 22122102122222.

222221201221220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 5605964066 + ... + 5606003705.

It is an arithmetic number, because the mean of its divisors is an integer number (19463976052192).

Almost surely, 2^{222221201221220} is an apocalyptic number.

222221201221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222221201221220 is an abundant number, since it is smaller than the sum of its proper divisors (244914224031388).

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

222221201221220 is a wasteful number, since it uses less digits than its factorization.

222221201221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11211968771 (or 11211968769 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 222221201221220 its reverse (22122102122222), we get a palindrome (244343303343442).

The spelling of 222221201221220 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two hundred one million, two hundred twenty-one thousand, two hundred twenty".