12110203021 has 4 divisors (see below), whose sum is σ = 13840232032. Its totient is φ = 10380174012.

The previous prime is 12110202967. The next prime is 12110203069. The reversal of 12110203021 is 12030201121.

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: 12030201121 = 41081 ⋅292841.

It is a cyclic number.

It is not a de Polignac number, because 12110203021 - 2⁷ = 12110202893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12110202992 and 12110203010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12110203121) 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, 865014495 + ... + 865014508.

It is an arithmetic number, because the mean of its divisors is an integer number (3460058008).

Almost surely, 2^12110203021 is an apocalyptic number.

It is an amenable number.

12110203021 is a deficient number, since it is larger than the sum of its proper divisors (1730029011).

12110203021 is an equidigital number, since it uses as much as digits as its factorization.

12110203021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730029010.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12110203021 its reverse (12030201121), we get a palindrome (24140404142).

The spelling of 12110203021 in words is "twelve billion, one hundred ten million, two hundred three thousand, twenty-one".