12203221330021 has 4 divisors (see below), whose sum is σ = 12433470789132. Its totient is φ = 11972971870912.

The previous prime is 12203221329989. The next prime is 12203221330033. The reversal of 12203221330021 is 12003312230221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10280808576900 + 1922412753121 = 3206370^2 + 1386511^2 .

It is a cyclic number.

It is not a de Polignac number, because 12203221330021 - 2⁵ = 12203221329989 is a prime.

It is a super-2 number, since 2×12203221330021² (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 = 12203221329974 and 12203221330001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203221330061) 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, 115124729476 + ... + 115124729581.

It is an arithmetic number, because the mean of its divisors is an integer number (3108367697283).

Almost surely, 2^{12203221330021} is an apocalyptic number.

It is an amenable number.

12203221330021 is a deficient number, since it is larger than the sum of its proper divisors (230249459111).

12203221330021 is an equidigital number, since it uses as much as digits as its factorization.

12203221330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230249459110.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12203221330021 its reverse (12003312230221), we get a palindrome (24206533560242).

The spelling of 12203221330021 in words is "twelve trillion, two hundred three billion, two hundred twenty-one million, three hundred thirty thousand, twenty-one".