122131012001 has 4 divisors (see below), whose sum is σ = 124435370772. Its totient is φ = 119826653232.

The previous prime is 122131011997. The next prime is 122131012013. The reversal of 122131012001 is 100210131221.

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 53014602001 + 69116410000 = 230249^2 + 262900^2 .

It is a cyclic number.

It is not a de Polignac number, because 122131012001 - 2² = 122131011997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122131012901) 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, 1152179306 + ... + 1152179411.

It is an arithmetic number, because the mean of its divisors is an integer number (31108842693).

Almost surely, 2^122131012001 is an apocalyptic number.

It is an amenable number.

122131012001 is a deficient number, since it is larger than the sum of its proper divisors (2304358771).

122131012001 is an equidigital number, since it uses as much as digits as its factorization.

122131012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304358770.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 122131012001 its reverse (100210131221), we get a palindrome (222341143222).

The spelling of 122131012001 in words is "one hundred twenty-two billion, one hundred thirty-one million, twelve thousand, one".