2001310023222 has 12 divisors (see below), whose sum is σ = 4336171717020. Its totient is φ = 667103341068.

The previous prime is 2001310023173. The next prime is 2001310023227. The reversal of 2001310023222 is 2223200131002.

It is a super-2 number, since 2×2001310023222² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 111183890179 = 2001310023222 / (2 + 0 + 0 + 1 + 3 + 1 + 0 + 0 + 2 + 3 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 2001310023195 and 2001310023204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001310023227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55591945072 + ... + 55591945107.

It is an arithmetic number, because the mean of its divisors is an integer number (361347643085).

Almost surely, 2^{2001310023222} is an apocalyptic number.

2001310023222 is an abundant number, since it is smaller than the sum of its proper divisors (2334861693798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001310023222 is a wasteful number, since it uses less digits than its factorization.

2001310023222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111183890187 (or 111183890184 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 2001310023222 its reverse (2223200131002), we get a palindrome (4224510154224).

The spelling of 2001310023222 in words is "two trillion, one billion, three hundred ten million, twenty-three thousand, two hundred twenty-two".