222102112121 has 8 divisors (see below), whose sum is σ = 224939505384. Its totient is φ = 219280015360.

The previous prime is 222102112097. The next prime is 222102112129. The reversal of 222102112121 is 121211201222.

It can be written as a sum of positive squares in 4 ways, for example, as 53148230521 + 168953881600 = 230539^2 + 411040^2 .

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 222102112121 - 2³⁴ = 204922242937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222102112121.

It is not an unprimeable number, because it can be changed into a prime (222102112129) 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, 3794900 + ... + 3852981.

It is an arithmetic number, because the mean of its divisors is an integer number (28117438173).

Almost surely, 2^222102112121 is an apocalyptic number.

It is an amenable number.

222102112121 is a deficient number, since it is larger than the sum of its proper divisors (2837393263).

222102112121 is a wasteful number, since it uses less digits than its factorization.

222102112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7648251.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222102112121 its reverse (121211201222), we get a palindrome (343313313343).

The spelling of 222102112121 in words is "two hundred twenty-two billion, one hundred two million, one hundred twelve thousand, one hundred twenty-one".