12112002111001 has 16 divisors (see below), whose sum is σ = 13471854164496. Its totient is φ = 10819095146496.

The previous prime is 12112002110893. The next prime is 12112002111019. The reversal of 12112002111001 is 10011120021121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1182762827401 + 10929239283600 = 1087549^2 + 3305940^2 .

It is not a de Polignac number, because 12112002111001 - 2¹⁷ = 12112001979929 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (12112002111071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120354520 + ... + 120455113.

It is an arithmetic number, because the mean of its divisors is an integer number (841990885281).

Almost surely, 2^{12112002111001} is an apocalyptic number.

It is an amenable number.

12112002111001 is a deficient number, since it is larger than the sum of its proper divisors (1359852053495).

12112002111001 is a wasteful number, since it uses less digits than its factorization.

12112002111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240809772.

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

Adding to 12112002111001 its reverse (10011120021121), we get a palindrome (22123122132122).

The spelling of 12112002111001 in words is "twelve trillion, one hundred twelve billion, two million, one hundred eleven thousand, one".