222120121121 has 8 divisors (see below), whose sum is σ = 226009308288. Its totient is φ = 218238930000.

The previous prime is 222120121079. The next prime is 222120121127. The reversal of 222120121121 is 121121021222.

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 222120121121 - 2¹⁴ = 222120104737 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 222120121121.

It is not an unprimeable number, because it can be changed into a prime (222120121127) 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, 1942955 + ... + 2054096.

It is an arithmetic number, because the mean of its divisors is an integer number (28251163536).

Almost surely, 2^222120121121 is an apocalyptic number.

It is an amenable number.

222120121121 is a deficient number, since it is larger than the sum of its proper divisors (3889187167).

222120121121 is an equidigital number, since it uses as much as digits as its factorization.

222120121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3998023.

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

Adding to 222120121121 its reverse (121121021222), we get a palindrome (343241142343).

The spelling of 222120121121 in words is "two hundred twenty-two billion, one hundred twenty million, one hundred twenty-one thousand, one hundred twenty-one".