12112111211222 has 16 divisors (see below), whose sum is σ = 19819902690000. Its totient is φ = 5505481667040.

The previous prime is 12112111211191. The next prime is 12112111211261. The reversal of 12112111211222 is 22211211121121.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12112111211194 and 12112111211203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4789904 + ... + 6867852.

It is an arithmetic number, because the mean of its divisors is an integer number (1238743918125).

Almost surely, 2^{12112111211222} is an apocalyptic number.

12112111211222 is a deficient number, since it is larger than the sum of its proper divisors (7707791478778).

12112111211222 is a wasteful number, since it uses less digits than its factorization.

12112111211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342911.

The product of its digits is 64, while the sum is 20.

Adding to 12112111211222 its reverse (22211211121121), we get a palindrome (34323322332343).

The spelling of 12112111211222 in words is "twelve trillion, one hundred twelve billion, one hundred eleven million, two hundred eleven thousand, two hundred twenty-two".