222120322997 has 2 divisors, whose sum is σ = 222120322998. Its totient is φ = 222120322996.

The previous prime is 222120322901. The next prime is 222120322999. The reversal of 222120322997 is 799223021222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220891540081 + 1228782916 = 469991^2 + 35054^2 .

It is a cyclic number.

It is not a de Polignac number, because 222120322997 - 2⁸ = 222120322741 is a prime.

Together with 222120322999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222120322999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060161498 + 111060161499.

It is an arithmetic number, because the mean of its divisors is an integer number (111060161499).

Almost surely, 2^222120322997 is an apocalyptic number.

It is an amenable number.

222120322997 is a deficient number, since it is larger than the sum of its proper divisors (1).

222120322997 is an equidigital number, since it uses as much as digits as its factorization.

222120322997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 222120322997 in words is "two hundred twenty-two billion, one hundred twenty million, three hundred twenty-two thousand, nine hundred ninety-seven".