13218072001 has 4 divisors (see below), whose sum is σ = 13280717104. Its totient is φ = 13155426900.

The previous prime is 13218071983. The next prime is 13218072011. The reversal of 13218072001 is 10027081231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10027081231 = 1721 ⋅5826311.

It is a cyclic number.

It is not a de Polignac number, because 13218072001 - 2⁷ = 13218071873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13218072011) 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, 31322235 + ... + 31322656.

It is an arithmetic number, because the mean of its divisors is an integer number (3320179276).

Almost surely, 2^13218072001 is an apocalyptic number.

It is an amenable number.

13218072001 is a deficient number, since it is larger than the sum of its proper divisors (62645103).

13218072001 is an equidigital number, since it uses as much as digits as its factorization.

13218072001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62645102.

The product of its (nonzero) digits is 672, while the sum is 25.

The spelling of 13218072001 in words is "thirteen billion, two hundred eighteen million, seventy-two thousand, one".