231120122200001 has 4 divisors (see below), whose sum is σ = 231120615890052. Its totient is φ = 231119628509952.

The previous prime is 231120122199997. The next prime is 231120122200109. The reversal of 231120122200001 is 100002221021132.

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 73407213975601 + 157712908224400 = 8567801^2 + 12558380^2 .

It is a cyclic number.

It is not a de Polignac number, because 231120122200001 - 2² = 231120122199997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231120122200501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246142136 + ... + 247079321.

It is an arithmetic number, because the mean of its divisors is an integer number (57780153972513).

Almost surely, 2^{231120122200001} is an apocalyptic number.

It is an amenable number.

231120122200001 is a deficient number, since it is larger than the sum of its proper divisors (493690051).

231120122200001 is an equidigital number, since it uses as much as digits as its factorization.

231120122200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493690050.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 231120122200001 its reverse (100002221021132), we get a palindrome (331122343221133).

The spelling of 231120122200001 in words is "two hundred thirty-one trillion, one hundred twenty billion, one hundred twenty-two million, two hundred thousand, one".