12112012212001 has 4 divisors (see below), whose sum is σ = 13043705459092. Its totient is φ = 11180318964912.

The previous prime is 12112012211987. The next prime is 12112012212017. The reversal of 12112012212001 is 10021221021121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5895960985600 + 6216051226401 = 2428160^2 + 2493201^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112012212001 - 2⁵ = 12112012211969 is a prime.

It is a super-2 number, since 2×12112012212001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112012212061) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 465846623526 + ... + 465846623551.

It is an arithmetic number, because the mean of its divisors is an integer number (3260926364773).

Almost surely, 2^{12112012212001} is an apocalyptic number.

It is an amenable number.

12112012212001 is a deficient number, since it is larger than the sum of its proper divisors (931693247091).

12112012212001 is an equidigital number, since it uses as much as digits as its factorization.

12112012212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931693247090.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12112012212001 its reverse (10021221021121), we get a palindrome (22133233233122).

The spelling of 12112012212001 in words is "twelve trillion, one hundred twelve billion, twelve million, two hundred twelve thousand, one".