12231213193 has 24 divisors (see below), whose sum is σ = 13329196920. Its totient is φ = 11223372800.

The previous prime is 12231213187. The next prime is 12231213233. The reversal of 12231213193 is 39131213221.

It can be written as a sum of positive squares in 12 ways, for example, as 8004523024 + 4226690169 = 89468^2 + 65013^2 .

It is not a de Polignac number, because 12231213193 - 2⁵ = 12231213161 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 (12231213593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8258013 + ... + 8259493.

It is an arithmetic number, because the mean of its divisors is an integer number (555383205).

Almost surely, 2^12231213193 is an apocalyptic number.

It is an amenable number.

12231213193 is a deficient number, since it is larger than the sum of its proper divisors (1097983727).

12231213193 is an frugal number, since it uses more digits than its factorization.

12231213193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614 (or 1539 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

Adding to 12231213193 its sum of digits (28), we get a palindrome (12231213221).

The spelling of 12231213193 in words is "twelve billion, two hundred thirty-one million, two hundred thirteen thousand, one hundred ninety-three".