12112211551213 has 16 divisors (see below), whose sum is σ = 13029116135040. Its totient is φ = 11233210754304.

The previous prime is 12112211551183. The next prime is 12112211551217. The reversal of 12112211551213 is 31215511221121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12112211551213 - 2¹³ = 12112211543021 is a prime.

It is a super-2 number, since 2×12112211551213² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112211551217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61036056 + ... + 61234177.

It is an arithmetic number, because the mean of its divisors is an integer number (814319758440).

Almost surely, 2^{12112211551213} is an apocalyptic number.

It is an amenable number.

12112211551213 is a deficient number, since it is larger than the sum of its proper divisors (916904583827).

12112211551213 is a wasteful number, since it uses less digits than its factorization.

12112211551213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122270388.

The product of its digits is 1200, while the sum is 28.

Adding to 12112211551213 its reverse (31215511221121), we get a palindrome (43327722772334).

The spelling of 12112211551213 in words is "twelve trillion, one hundred twelve billion, two hundred eleven million, five hundred fifty-one thousand, two hundred thirteen".