12213133021 has 4 divisors (see below), whose sum is σ = 12331707232. Its totient is φ = 12094558812.

The previous prime is 12213132959. The next prime is 12213133057. The reversal of 12213133021 is 12033131221.

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 12213133021 - 2⁹ = 12213132509 is a prime.

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 12213133021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213133721) 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, 59286951 + ... + 59287156.

It is an arithmetic number, because the mean of its divisors is an integer number (3082926808).

Almost surely, 2^12213133021 is an apocalyptic number.

It is an amenable number.

12213133021 is a deficient number, since it is larger than the sum of its proper divisors (118574211).

12213133021 is a wasteful number, since it uses less digits than its factorization.

12213133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118574210.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12213133021 its reverse (12033131221), we get a palindrome (24246264242).

The spelling of 12213133021 in words is "twelve billion, two hundred thirteen million, one hundred thirty-three thousand, twenty-one".