12192029121 has 4 divisors (see below), whose sum is σ = 16256038832. Its totient is φ = 8128019412.

The previous prime is 12192029093. The next prime is 12192029131.

12192029121 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 not a de Polignac number, because 12192029121 - 2⁵ = 12192029089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12192029131) 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, 2032004851 + ... + 2032004856.

It is an arithmetic number, because the mean of its divisors is an integer number (4064009708).

Almost surely, 2^12192029121 is an apocalyptic number.

It is an amenable number.

12192029121 is a deficient number, since it is larger than the sum of its proper divisors (4064009711).

12192029121 is an equidigital number, since it uses as much as digits as its factorization.

12192029121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064009710.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 12192029121 in words is "twelve billion, one hundred ninety-two million, twenty-nine thousand, one hundred twenty-one".