12193129221 has 32 divisors (see below), whose sum is σ = 20550044928. Its totient is φ = 6257710080.

The previous prime is 12193129183. The next prime is 12193129237. The reversal of 12193129221 is 12292139121.

It is not a de Polignac number, because 12193129221 - 2¹⁸ = 12192867077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12193129121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 593460 + ... + 613661.

It is an arithmetic number, because the mean of its divisors is an integer number (642188904).

Almost surely, 2^12193129221 is an apocalyptic number.

It is an amenable number.

12193129221 is a deficient number, since it is larger than the sum of its proper divisors (8356915707).

12193129221 is a wasteful number, since it uses less digits than its factorization.

12193129221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207181.

The product of its digits is 3888, while the sum is 33.

The spelling of 12193129221 in words is "twelve billion, one hundred ninety-three million, one hundred twenty-nine thousand, two hundred twenty-one".