222221021221220 has 96 divisors (see below), whose sum is σ = 539331056812800. Its totient is φ = 75332860821504.

The previous prime is 222221021221063. The next prime is 222221021221267. The reversal of 222221021221220 is 22122120122222.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1485568391 + ... + 1485717969.

It is an arithmetic number, because the mean of its divisors is an integer number (5618031841800).

Almost surely, 2^{222221021221220} is an apocalyptic number.

222221021221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222221021221220 is an abundant number, since it is smaller than the sum of its proper divisors (317110035591580).

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

222221021221220 is a wasteful number, since it uses less digits than its factorization.

222221021221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268917 (or 268915 counting only the distinct ones).

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

Adding to 222221021221220 its reverse (22122120122222), we get a palindrome (244343141343442).

The spelling of 222221021221220 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, twenty-one million, two hundred twenty-one thousand, two hundred twenty".