12021330211123 has 4 divisors (see below), whose sum is σ = 12021337559160. Its totient is φ = 12021322863088.

The previous prime is 12021330211103. The next prime is 12021330211147. The reversal of 12021330211123 is 32111203312021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021330211123 is a prime.

It is a super-2 number, since 2×12021330211123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021330211094 and 12021330211103.

It is not an unprimeable number, because it can be changed into a prime (12021330211103) 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, 13983 + ... + 4903351.

It is an arithmetic number, because the mean of its divisors is an integer number (3005334389790).

Almost surely, 2^{12021330211123} is an apocalyptic number.

12021330211123 is a deficient number, since it is larger than the sum of its proper divisors (7348037).

12021330211123 is an equidigital number, since it uses as much as digits as its factorization.

12021330211123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7348036.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12021330211123 its reverse (32111203312021), we get a palindrome (44132533523144).

The spelling of 12021330211123 in words is "twelve trillion, twenty-one billion, three hundred thirty million, two hundred eleven thousand, one hundred twenty-three".