12231211001 has 4 divisors (see below), whose sum is σ = 12256326912. Its totient is φ = 12206095092.

The previous prime is 12231210991. The next prime is 12231211021. The reversal of 12231211001 is 10011213221.

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 a de Polignac number, because none of the positive numbers 2^k-12231211001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12231211021) 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, 12557225 + ... + 12558198.

It is an arithmetic number, because the mean of its divisors is an integer number (3064081728).

Almost surely, 2^12231211001 is an apocalyptic number.

It is an amenable number.

12231211001 is a deficient number, since it is larger than the sum of its proper divisors (25115911).

12231211001 is an equidigital number, since it uses as much as digits as its factorization.

12231211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25115910.

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

Adding to 12231211001 its reverse (10011213221), we get a palindrome (22242424222).

The spelling of 12231211001 in words is "twelve billion, two hundred thirty-one million, two hundred eleven thousand, one".