12141331021 has 4 divisors (see below), whose sum is σ = 12147443392. Its totient is φ = 12135218652.

The previous prime is 12141331003. The next prime is 12141331063. The reversal of 12141331021 is 12013314121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12013314121 = 919 ⋅13072159.

It is a cyclic number.

It is not a de Polignac number, because 12141331021 - 2⁷ = 12141330893 is a prime.

It is a super-2 number, since 2×12141331021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12141331021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12141331421) 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, 3053205 + ... + 3057178.

It is an arithmetic number, because the mean of its divisors is an integer number (3036860848).

Almost surely, 2^12141331021 is an apocalyptic number.

It is an amenable number.

12141331021 is a deficient number, since it is larger than the sum of its proper divisors (6112371).

12141331021 is an equidigital number, since it uses as much as digits as its factorization.

12141331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6112370.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12141331021 its reverse (12013314121), we get a palindrome (24154645142).

The spelling of 12141331021 in words is "twelve billion, one hundred forty-one million, three hundred thirty-one thousand, twenty-one".