222200032121 has 2 divisors, whose sum is σ = 222200032122. Its totient is φ = 222200032120.

The previous prime is 222200032099. The next prime is 222200032181. The reversal of 222200032121 is 121230002222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204200053225 + 17999978896 = 451885^2 + 134164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222200032121 is a prime.

It is a super-4 number, since 4×222200032121⁴ (a number of 46 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222200032121.

It is not a weakly prime, because it can be changed into another prime (222200032181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111100016060 + 111100016061.

It is an arithmetic number, because the mean of its divisors is an integer number (111100016061).

Almost surely, 2^222200032121 is an apocalyptic number.

It is an amenable number.

222200032121 is a deficient number, since it is larger than the sum of its proper divisors (1).

222200032121 is an equidigital number, since it uses as much as digits as its factorization.

222200032121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 222200032121 its reverse (121230002222), we get a palindrome (343430034343).

The spelling of 222200032121 in words is "two hundred twenty-two billion, two hundred million, thirty-two thousand, one hundred twenty-one".