12112222121011 has 8 divisors (see below), whose sum is σ = 12532277679120. Its totient is φ = 11692326078048.

The previous prime is 12112222120993. The next prime is 12112222121039. The reversal of 12112222121011 is 11012122221121.

It is a happy number.

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 12112222121011 - 2⁵ = 12112222120979 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 12112222121011.

It is not an unprimeable number, because it can be changed into a prime (12112222121071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39724281 + ... + 40028026.

It is an arithmetic number, because the mean of its divisors is an integer number (1566534709890).

Almost surely, 2^{12112222121011} is an apocalyptic number.

12112222121011 is a deficient number, since it is larger than the sum of its proper divisors (420055558109).

12112222121011 is an equidigital number, since it uses as much as digits as its factorization.

12112222121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79757573.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12112222121011 its reverse (11012122221121), we get a palindrome (23124344342132).

The spelling of 12112222121011 in words is "twelve trillion, one hundred twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, eleven".