13122232001 has 4 divisors (see below), whose sum is σ = 13269672900. Its totient is φ = 12974791104.

The previous prime is 13122231973. The next prime is 13122232007. The reversal of 13122232001 is 10023222131.

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 5531640625 + 7590591376 = 74375^2 + 87124^2 .

It is a cyclic number.

It is not a de Polignac number, because 13122232001 - 2¹⁰ = 13122230977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13122232007) 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, 73720316 + ... + 73720493.

It is an arithmetic number, because the mean of its divisors is an integer number (3317418225).

Almost surely, 2^13122232001 is an apocalyptic number.

It is an amenable number.

13122232001 is a deficient number, since it is larger than the sum of its proper divisors (147440899).

13122232001 is an equidigital number, since it uses as much as digits as its factorization.

13122232001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147440898.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13122232001 its reverse (10023222131), we get a palindrome (23145454132).

The spelling of 13122232001 in words is "thirteen billion, one hundred twenty-two million, two hundred thirty-two thousand, one".