2001223105401 has 32 divisors (see below), whose sum is σ = 2929503532032. Its totient is φ = 1207569841920.

The previous prime is 2001223105393. The next prime is 2001223105421. The reversal of 2001223105401 is 1045013221002.

It is not a de Polignac number, because 2001223105401 - 2³ = 2001223105393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001223105421) 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 in 31 ways as a sum of consecutive naturals, for example, 3213496 + ... + 3785366.

It is an arithmetic number, because the mean of its divisors is an integer number (91546985376).

Almost surely, 2^{2001223105401} is an apocalyptic number.

It is an amenable number.

2001223105401 is a deficient number, since it is larger than the sum of its proper divisors (928280426631).

2001223105401 is a wasteful number, since it uses less digits than its factorization.

2001223105401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573633.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 2001223105401 its reverse (1045013221002), we get a palindrome (3046236326403).

The spelling of 2001223105401 in words is "two trillion, one billion, two hundred twenty-three million, one hundred five thousand, four hundred one".