12021320212203 has 4 divisors (see below), whose sum is σ = 16028426949608. Its totient is φ = 8014213474800.

The previous prime is 12021320212177. The next prime is 12021320212243. The reversal of 12021320212203 is 30221202312021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12021320212203 - 2²⁰ = 12021319163627 is a prime.

It is a super-2 number, since 2×12021320212203² (a number of 27 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 12021320212203.

It is not an unprimeable number, because it can be changed into a prime (12021320212243) 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, 2003553368698 + ... + 2003553368703.

It is an arithmetic number, because the mean of its divisors is an integer number (4007106737402).

Almost surely, 2^{12021320212203} is an apocalyptic number.

12021320212203 is a deficient number, since it is larger than the sum of its proper divisors (4007106737405).

12021320212203 is an equidigital number, since it uses as much as digits as its factorization.

12021320212203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007106737404.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12021320212203 its reverse (30221202312021), we get a palindrome (42242522524224).

The spelling of 12021320212203 in words is "twelve trillion, twenty-one billion, three hundred twenty million, two hundred twelve thousand, two hundred three".