222120021212213 has 2 divisors, whose sum is σ = 222120021212214. Its totient is φ = 222120021212212.

The previous prime is 222120021212147. The next prime is 222120021212227. The reversal of 222120021212213 is 312212120021222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222108410503204 + 11610709009 = 14903302^2 + 107753^2 .

It is a cyclic number.

It is not a de Polignac number, because 222120021212213 - 2²⁰ = 222120020163637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222120021212273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060010606106 + 111060010606107.

It is an arithmetic number, because the mean of its divisors is an integer number (111060010606107).

Almost surely, 2^{222120021212213} is an apocalyptic number.

It is an amenable number.

222120021212213 is a deficient number, since it is larger than the sum of its proper divisors (1).

222120021212213 is an equidigital number, since it uses as much as digits as its factorization.

222120021212213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 222120021212213 its reverse (312212120021222), we get a palindrome (534332141233435).

The spelling of 222120021212213 in words is "two hundred twenty-two trillion, one hundred twenty billion, twenty-one million, two hundred twelve thousand, two hundred thirteen".