222112221121 has 8 divisors (see below), whose sum is σ = 254188850624. Its totient is φ = 190122169680.

The previous prime is 222112221077. The next prime is 222112221173. The reversal of 222112221121 is 121122211222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222112221121 - 2⁹ = 222112220609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222112221181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21639015 + ... + 21649276.

It is an arithmetic number, because the mean of its divisors is an integer number (31773606328).

Almost surely, 2^222112221121 is an apocalyptic number.

It is an amenable number.

222112221121 is a deficient number, since it is larger than the sum of its proper divisors (32076629503).

222112221121 is an equidigital number, since it uses as much as digits as its factorization.

222112221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43289031.

The product of its digits is 128, while the sum is 19.

Adding to 222112221121 its reverse (121122211222), we get a palindrome (343234432343).

The spelling of 222112221121 in words is "two hundred twenty-two billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twenty-one".