2001223442443 has 2 divisors, whose sum is σ = 2001223442444. Its totient is φ = 2001223442442.

The previous prime is 2001223442377. The next prime is 2001223442461. The reversal of 2001223442443 is 3442443221002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001223442443 - 2¹⁷ = 2001223311371 is a prime.

It is a super-2 number, since 2×2001223442443² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2001223442143) 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, 1000611721221 + 1000611721222.

It is an arithmetic number, because the mean of its divisors is an integer number (1000611721222).

Almost surely, 2^{2001223442443} is an apocalyptic number.

2001223442443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001223442443 is an equidigital number, since it uses as much as digits as its factorization.

2001223442443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 2001223442443 its reverse (3442443221002), we get a palindrome (5443666663445).

The spelling of 2001223442443 in words is "two trillion, one billion, two hundred twenty-three million, four hundred forty-two thousand, four hundred forty-three".