2001312322223 has 2 divisors, whose sum is σ = 2001312322224. Its totient is φ = 2001312322222.

The previous prime is 2001312322211. The next prime is 2001312322237. The reversal of 2001312322223 is 3222232131002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001312322223 - 2¹⁸ = 2001312060079 is a prime.

It is a super-2 number, since 2×2001312322223² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001312322523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000656161111 + 1000656161112.

It is an arithmetic number, because the mean of its divisors is an integer number (1000656161112).

Almost surely, 2^{2001312322223} is an apocalyptic number.

2001312322223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001312322223 is an equidigital number, since it uses as much as digits as its factorization.

2001312322223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 2001312322223 its reverse (3222232131002), we get a palindrome (5223544453225).

The spelling of 2001312322223 in words is "two trillion, one billion, three hundred twelve million, three hundred twenty-two thousand, two hundred twenty-three".