12112011001012 has 144 divisors (see below), whose sum is σ = 23757244548912. Its totient is φ = 5396535705600.

The previous prime is 12112011001007. The next prime is 12112011001033. The reversal of 12112011001012 is 21010011021121.

It is a happy number.

It can be written as a sum of positive squares in 24 ways, for example, as 1827893184016 + 10284117816996 = 1351996^2 + 3206886^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 12112011000983 and 12112011001001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1935750588 + ... + 1935756844.

It is an arithmetic number, because the mean of its divisors is an integer number (164980864923).

Almost surely, 2^{12112011001012} is an apocalyptic number.

It is an amenable number.

12112011001012 is a deficient number, since it is larger than the sum of its proper divisors (11645233547900).

12112011001012 is a wasteful number, since it uses less digits than its factorization.

12112011001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6918 (or 6903 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12112011001012 its reverse (21010011021121), we get a palindrome (33122022022133).

The spelling of 12112011001012 in words is "twelve trillion, one hundred twelve billion, eleven million, one thousand, twelve".