12203312021021 has 4 divisors (see below), whose sum is σ = 13312704022944. Its totient is φ = 11093920019100.

The previous prime is 12203312021003. The next prime is 12203312021023. The reversal of 12203312021021 is 12012021330221.

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 12203312021021 - 2¹⁸ = 12203311758877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12203312020984 and 12203312021002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203312021023) 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, 554696000945 + ... + 554696000966.

It is an arithmetic number, because the mean of its divisors is an integer number (3328176005736).

Almost surely, 2^{12203312021021} is an apocalyptic number.

12203312021021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12203312021021 is a deficient number, since it is larger than the sum of its proper divisors (1109392001923).

12203312021021 is a wasteful number, since it uses less digits than its factorization.

12203312021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109392001922.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12203312021021 its reverse (12012021330221), we get a palindrome (24215333351242).

The spelling of 12203312021021 in words is "twelve trillion, two hundred three billion, three hundred twelve million, twenty-one thousand, twenty-one".