12303211000021 has 4 divisors (see below), whose sum is σ = 12589332186112. Its totient is φ = 12017089813932.

The previous prime is 12303210999991. The next prime is 12303211000079. The reversal of 12303211000021 is 12000011230321.

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.

It is a cyclic number.

It is not a de Polignac number, because 12303211000021 - 2⁹ = 12303210999509 is a prime.

It is a super-2 number, since 2×12303211000021² (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 = 12303210999959 and 12303211000004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12303211000721) 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, 143060592981 + ... + 143060593066.

It is an arithmetic number, because the mean of its divisors is an integer number (3147333046528).

Almost surely, 2^{12303211000021} is an apocalyptic number.

It is an amenable number.

12303211000021 is a deficient number, since it is larger than the sum of its proper divisors (286121186091).

12303211000021 is an equidigital number, since it uses as much as digits as its factorization.

12303211000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286121186090.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12303211000021 its reverse (12000011230321), we get a palindrome (24303222230342).

The spelling of 12303211000021 in words is "twelve trillion, three hundred three billion, two hundred eleven million, twenty-one", and thus it is an aban number.