12140141421 has 4 divisors (see below), whose sum is σ = 16186855232. Its totient is φ = 8093427612.

The previous prime is 12140141399. The next prime is 12140141437. The reversal of 12140141421 is 12414104121.

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 12140141421 - 2¹¹ = 12140139373 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 (12140141441) 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, 2023356901 + ... + 2023356906.

It is an arithmetic number, because the mean of its divisors is an integer number (4046713808).

Almost surely, 2^12140141421 is an apocalyptic number.

It is an amenable number.

12140141421 is a deficient number, since it is larger than the sum of its proper divisors (4046713811).

12140141421 is an equidigital number, since it uses as much as digits as its factorization.

12140141421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4046713810.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12140141421 its reverse (12414104121), we get a palindrome (24554245542).

The spelling of 12140141421 in words is "twelve billion, one hundred forty million, one hundred forty-one thousand, four hundred twenty-one".