222212021220 has 192 divisors, whose sum is σ = 803040268800. Its totient is φ = 49958622720.

The previous prime is 222212021209. The next prime is 222212021233. The reversal of 222212021220 is 22120212222.

222212021220 is a `hidden beast` number, since 22 + 221 + 202 + 1 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 222212021193 and 222212021202.

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, 251275 + ... + 712434.

It is an arithmetic number, because the mean of its divisors is an integer number (4182501400).

Almost surely, 2^222212021220 is an apocalyptic number.

222212021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222212021220 is an abundant number, since it is smaller than the sum of its proper divisors (580828247580).

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

222212021220 is a wasteful number, since it uses less digits than its factorization.

222212021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963795 (or 963787 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222212021220 its reverse (22120212222), we get a palindrome (244332233442).

It can be divided in two parts, 2 and 22212021220, that added together give a palindrome (22212021222).

The spelling of 222212021220 in words is "two hundred twenty-two billion, two hundred twelve million, twenty-one thousand, two hundred twenty".