12237873221 has 4 divisors (see below), whose sum is σ = 13986140832. Its totient is φ = 10489605612.

The previous prime is 12237873199. The next prime is 12237873269.

12237873221 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 12237873221 - 2⁶ = 12237873157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12237873121) 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, 874133795 + ... + 874133808.

It is an arithmetic number, because the mean of its divisors is an integer number (3496535208).

Almost surely, 2^12237873221 is an apocalyptic number.

It is an amenable number.

12237873221 is a deficient number, since it is larger than the sum of its proper divisors (1748267611).

12237873221 is an equidigital number, since it uses as much as digits as its factorization.

12237873221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748267610.

The product of its digits is 56448, while the sum is 38.

The spelling of 12237873221 in words is "twelve billion, two hundred thirty-seven million, eight hundred seventy-three thousand, two hundred twenty-one".