12022030021 has 4 divisors (see below), whose sum is σ = 12157109100. Its totient is φ = 11886950944.

The previous prime is 12022029983. The next prime is 12022030079. The reversal of 12022030021 is 12003022021.

12022030021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1676902500 + 10345127521 = 40950^2 + 101711^2 .

It is a cyclic number.

It is not a de Polignac number, because 12022030021 - 2¹⁹ = 12021505733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12022029983 and 12022030010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022030081) 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 3 ways as a sum of consecutive naturals, for example, 67539406 + ... + 67539583.

It is an arithmetic number, because the mean of its divisors is an integer number (3039277275).

Almost surely, 2^12022030021 is an apocalyptic number.

It is an amenable number.

12022030021 is a deficient number, since it is larger than the sum of its proper divisors (135079079).

12022030021 is an equidigital number, since it uses as much as digits as its factorization.

12022030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135079078.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 12022030021 its reverse (12003022021), we get a palindrome (24025052042).

The spelling of 12022030021 in words is "twelve billion, twenty-two million, thirty thousand, twenty-one".