7912222111 has 8 divisors (see below), whose sum is σ = 8273479680. Its totient is φ = 7552401912.

The previous prime is 7912222067. The next prime is 7912222121. The reversal of 7912222111 is 1112222197.

7912222111 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7912222111 - 2⁷ = 7912221983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7912222111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7912222121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348075 + ... + 370108.

It is an arithmetic number, because the mean of its divisors is an integer number (1034184960).

Almost surely, 2^7912222111 is an apocalyptic number.

7912222111 is a deficient number, since it is larger than the sum of its proper divisors (361257569).

7912222111 is a wasteful number, since it uses less digits than its factorization.

7912222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718685.

The product of its digits is 1008, while the sum is 28.

The square root of 7912222111 is about 88950.6723470936. The cubic root of 7912222111 is about 1992.6582583085.

The spelling of 7912222111 in words is "seven billion, nine hundred twelve million, two hundred twenty-two thousand, one hundred eleven".