2001321300222 has 144 divisors (see below), whose sum is σ = 4769597804400. Its totient is φ = 605643816960.

The previous prime is 2001321300191. The next prime is 2001321300283. The reversal of 2001321300222 is 2220031231002.

2001321300222 is a `hidden beast` number, since 20 + 0 + 1 + 321 + 300 + 2 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2001321300195 and 2001321300204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 176649054 + ... + 176660382.

It is an arithmetic number, because the mean of its divisors is an integer number (33122206975).

Almost surely, 2^{2001321300222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001321300222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2384798902200).

2001321300222 is an abundant number, since it is smaller than the sum of its proper divisors (2768276504178).

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

2001321300222 is a wasteful number, since it uses less digits than its factorization.

2001321300222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12571 (or 12551 counting only the distinct ones).

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

Adding to 2001321300222 its reverse (2220031231002), we get a palindrome (4221352531224).

The spelling of 2001321300222 in words is "two trillion, one billion, three hundred twenty-one million, three hundred thousand, two hundred twenty-two".