222221120213 has 2 divisors, whose sum is σ = 222221120214. Its totient is φ = 222221120212.

The previous prime is 222221120197. The next prime is 222221120237. The reversal of 222221120213 is 312021122222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211694770609 + 10526349604 = 460103^2 + 102598^2 .

It is a cyclic number.

It is not a de Polignac number, because 222221120213 - 2⁴ = 222221120197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222221120713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110560106 + 111110560107.

It is an arithmetic number, because the mean of its divisors is an integer number (111110560107).

Almost surely, 2^222221120213 is an apocalyptic number.

It is an amenable number.

222221120213 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221120213 is an equidigital number, since it uses as much as digits as its factorization.

222221120213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 222221120213 its reverse (312021122222), we get a palindrome (534242242435).

The spelling of 222221120213 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred twenty thousand, two hundred thirteen".