222002232121 has 2 divisors, whose sum is σ = 222002232122. Its totient is φ = 222002232120.

The previous prime is 222002232119. The next prime is 222002232139. The reversal of 222002232121 is 121232200222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171462246400 + 50539985721 = 414080^2 + 224811^2 .

It is a cyclic number.

It is not a de Polignac number, because 222002232121 - 2¹ = 222002232119 is a prime.

Together with 222002232119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (222002232721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111001116060 + 111001116061.

It is an arithmetic number, because the mean of its divisors is an integer number (111001116061).

Almost surely, 2^222002232121 is an apocalyptic number.

It is an amenable number.

222002232121 is a deficient number, since it is larger than the sum of its proper divisors (1).

222002232121 is an equidigital number, since it uses as much as digits as its factorization.

222002232121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 222002232121 its reverse (121232200222), we get a palindrome (343234432343).

The spelling of 222002232121 in words is "two hundred twenty-two billion, two million, two hundred thirty-two thousand, one hundred twenty-one".