16321211212361 has 4 divisors (see below), whose sum is σ = 17804957686224. Its totient is φ = 14837464738500.

The previous prime is 16321211212321. The next prime is 16321211212381.

16321211212361 is nontrivially palindromic in base 10.

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.

It is a cyclic number.

It is not a de Polignac number, because 16321211212361 - 2³⁴ = 16304031343177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16321211212321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741873236915 + ... + 741873236936.

It is an arithmetic number, because the mean of its divisors is an integer number (4451239421556).

Almost surely, 2^{16321211212361} is an apocalyptic number.

16321211212361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16321211212361 is a deficient number, since it is larger than the sum of its proper divisors (1483746473863).

16321211212361 is a wasteful number, since it uses less digits than its factorization.

16321211212361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483746473862.

The product of its digits is 5184, while the sum is 32.

It can be divided in two parts, 1632121 and 1212361, that added together give a palindrome (2844482).

The spelling of 16321211212361 in words is "sixteen trillion, three hundred twenty-one billion, two hundred eleven million, two hundred twelve thousand, three hundred sixty-one".