912222111109 has 2 divisors, whose sum is σ = 912222111110. Its totient is φ = 912222111108.

The previous prime is 912222111061. The next prime is 912222111173. The reversal of 912222111109 is 901111222219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 493334854884 + 418887256225 = 702378^2 + 647215^2 .

It is a cyclic number.

It is not a de Polignac number, because 912222111109 - 2²³ = 912213722501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (912223111109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456111055554 + 456111055555.

It is an arithmetic number, because the mean of its divisors is an integer number (456111055555).

Almost surely, 2^912222111109 is an apocalyptic number.

It is an amenable number.

912222111109 is a deficient number, since it is larger than the sum of its proper divisors (1).

912222111109 is an equidigital number, since it uses as much as digits as its factorization.

912222111109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 912222111109 in words is "nine hundred twelve billion, two hundred twenty-two million, one hundred eleven thousand, one hundred nine".