221220112222127 has 2 divisors, whose sum is σ = 221220112222128. Its totient is φ = 221220112222126.

The previous prime is 221220112222093. The next prime is 221220112222169. The reversal of 221220112222127 is 721222211022122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221220112222127 - 2⁶ = 221220112222063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221220112222127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221220112224127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110610056111063 + 110610056111064.

It is an arithmetic number, because the mean of its divisors is an integer number (110610056111064).

Almost surely, 2^{221220112222127} is an apocalyptic number.

221220112222127 is a deficient number, since it is larger than the sum of its proper divisors (1).

221220112222127 is an equidigital number, since it uses as much as digits as its factorization.

221220112222127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 29.

Adding to 221220112222127 its reverse (721222211022122), we get a palindrome (942442323244249).

The spelling of 221220112222127 in words is "two hundred twenty-one trillion, two hundred twenty billion, one hundred twelve million, two hundred twenty-two thousand, one hundred twenty-seven".