4430002001021 has 2 divisors, whose sum is σ = 4430002001022. Its totient is φ = 4430002001020.

The previous prime is 4430002001011. The next prime is 4430002001041. The reversal of 4430002001021 is 1201002000344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4424548178521 + 5453822500 = 2103461^2 + 73850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4430002001021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4430002001011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2215001000510 + 2215001000511.

It is an arithmetic number, because the mean of its divisors is an integer number (2215001000511).

Almost surely, 2^{4430002001021} is an apocalyptic number.

It is an amenable number.

4430002001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4430002001021 is an equidigital number, since it uses as much as digits as its factorization.

4430002001021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 4430002001021 its reverse (1201002000344), we get a palindrome (5631004001365).

The spelling of 4430002001021 in words is "four trillion, four hundred thirty billion, two million, one thousand, twenty-one".