222112122221121 has 16 divisors (see below), whose sum is σ = 323423725347840. Its totient is φ = 134466929251920.

The previous prime is 222112122221071. The next prime is 222112122221153. The reversal of 222112122221121 is 121122221211222.

It is not a de Polignac number, because 222112122221121 - 2¹¹ = 222112122219073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222112122221091 and 222112122221100.

It is not an unprimeable number, because it can be changed into a prime (222112122222121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3661923085 + ... + 3661983738.

It is an arithmetic number, because the mean of its divisors is an integer number (20213982834240).

Almost surely, 2^{222112122221121} is an apocalyptic number.

It is an amenable number.

222112122221121 is a deficient number, since it is larger than the sum of its proper divisors (101311603126719).

222112122221121 is a wasteful number, since it uses less digits than its factorization.

222112122221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7323907756.

The product of its digits is 512, while the sum is 24.

Adding to 222112122221121 its reverse (121122221211222), we get a palindrome (343234343432343).

The spelling of 222112122221121 in words is "two hundred twenty-two trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty-one".