222212110121 has 2 divisors, whose sum is σ = 222212110122. Its totient is φ = 222212110120.

The previous prime is 222212110117. The next prime is 222212110207. The reversal of 222212110121 is 121011212222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128676451225 + 93535658896 = 358715^2 + 305836^2 .

It is a cyclic number.

It is not a de Polignac number, because 222212110121 - 2² = 222212110117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222212110121.

It is not a weakly prime, because it can be changed into another prime (222212130121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111106055060 + 111106055061.

It is an arithmetic number, because the mean of its divisors is an integer number (111106055061).

Almost surely, 2^222212110121 is an apocalyptic number.

It is an amenable number.

222212110121 is a deficient number, since it is larger than the sum of its proper divisors (1).

222212110121 is an equidigital number, since it uses as much as digits as its factorization.

222212110121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 222212110121 its reverse (121011212222), we get a palindrome (343223322343).

The spelling of 222212110121 in words is "two hundred twenty-two billion, two hundred twelve million, one hundred ten thousand, one hundred twenty-one".