12212243021 has 8 divisors (see below), whose sum is σ = 13329455904. Its totient is φ = 11096198320.

The previous prime is 12212243003. The next prime is 12212243081. The reversal of 12212243021 is 12034221221.

12212243021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12212243021 - 2³⁰ = 11138501197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212242984 and 12212243002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212243081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270110 + ... + 312063.

It is an arithmetic number, because the mean of its divisors is an integer number (1666181988).

Almost surely, 2^12212243021 is an apocalyptic number.

12212243021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12212243021 is a deficient number, since it is larger than the sum of its proper divisors (1117212883).

12212243021 is a wasteful number, since it uses less digits than its factorization.

12212243021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584091.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12212243021 its reverse (12034221221), we get a palindrome (24246464242).

The spelling of 12212243021 in words is "twelve billion, two hundred twelve million, two hundred forty-three thousand, twenty-one".