12112112221001 has 32 divisors (see below), whose sum is σ = 13763722896000. Its totient is φ = 10566217912320.

The previous prime is 12112112220959. The next prime is 12112112221009. The reversal of 12112112221001 is 10012221121121.

It is a cyclic number.

It is not a de Polignac number, because 12112112221001 - 2¹⁴ = 12112112204617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112112221009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 802597466 + ... + 802612556.

It is an arithmetic number, because the mean of its divisors is an integer number (430116340500).

Almost surely, 2^{12112112221001} is an apocalyptic number.

It is an amenable number.

12112112221001 is a deficient number, since it is larger than the sum of its proper divisors (1651610674999).

12112112221001 is a wasteful number, since it uses less digits than its factorization.

12112112221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22809.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12112112221001 its reverse (10012221121121), we get a palindrome (22124333342122).

The spelling of 12112112221001 in words is "twelve trillion, one hundred twelve billion, one hundred twelve million, two hundred twenty-one thousand, one".