221223121322167 has 2 divisors, whose sum is σ = 221223121322168. Its totient is φ = 221223121322166.

The previous prime is 221223121322117. The next prime is 221223121322171. The reversal of 221223121322167 is 761223121322122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221223121322167 - 2³¹ = 221220973838519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221223121322117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110611560661083 + 110611560661084.

It is an arithmetic number, because the mean of its divisors is an integer number (110611560661084).

Almost surely, 2^{221223121322167} is an apocalyptic number.

221223121322167 is a deficient number, since it is larger than the sum of its proper divisors (1).

221223121322167 is an equidigital number, since it uses as much as digits as its factorization.

221223121322167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

Adding to 221223121322167 its reverse (761223121322122), we get a palindrome (982446242644289).

The spelling of 221223121322167 in words is "two hundred twenty-one trillion, two hundred twenty-three billion, one hundred twenty-one million, three hundred twenty-two thousand, one hundred sixty-seven".