4430212112021 has 4 divisors (see below), whose sum is σ = 4450078534272. Its totient is φ = 4410345689772.

The previous prime is 4430212112017. The next prime is 4430212112057. The reversal of 4430212112021 is 1202112120344.

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 4430212112021 - 2² = 4430212112017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4430212114021) 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, 9933210791 + ... + 9933211236.

It is an arithmetic number, because the mean of its divisors is an integer number (1112519633568).

Almost surely, 2^{4430212112021} is an apocalyptic number.

It is an amenable number.

4430212112021 is a deficient number, since it is larger than the sum of its proper divisors (19866422251).

4430212112021 is a wasteful number, since it uses less digits than its factorization.

4430212112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19866422250.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 4430212112021 its reverse (1202112120344), we get a palindrome (5632324232365).

The spelling of 4430212112021 in words is "four trillion, four hundred thirty billion, two hundred twelve million, one hundred twelve thousand, twenty-one".