222121221122 has 16 divisors (see below), whose sum is σ = 334354003200. Its totient is φ = 110670503520.

The previous prime is 222121221097. The next prime is 222121221181. The reversal of 222121221122 is 221122121222.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 222121221094 and 222121221103.

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, 569654 + ... + 876782.

It is an arithmetic number, because the mean of its divisors is an integer number (20897125200).

Almost surely, 2^222121221122 is an apocalyptic number.

222121221122 is a deficient number, since it is larger than the sum of its proper divisors (112232782078).

222121221122 is a wasteful number, since it uses less digits than its factorization.

222121221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308401.

The product of its digits is 256, while the sum is 20.

Adding to 222121221122 its reverse (221122121222), we get a palindrome (443243342344).

The spelling of 222121221122 in words is "two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-two".