2001321111322 has 16 divisors (see below), whose sum is σ = 3233247544800. Its totient is φ = 923588320752.

The previous prime is 2001321111319. The next prime is 2001321111323. The reversal of 2001321111322 is 2231111231002.

It is a self number, because there is not a number n which added to its sum of digits gives 2001321111322.

It is not an unprimeable number, because it can be changed into a prime (2001321111323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3848572 + ... + 4337527.

It is an arithmetic number, because the mean of its divisors is an integer number (202077971550).

Almost surely, 2^{2001321111322} is an apocalyptic number.

2001321111322 is a deficient number, since it is larger than the sum of its proper divisors (1231926433478).

2001321111322 is a wasteful number, since it uses less digits than its factorization.

2001321111322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8195517.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2001321111322 its reverse (2231111231002), we get a palindrome (4232432342324).

The spelling of 2001321111322 in words is "two trillion, one billion, three hundred twenty-one million, one hundred eleven thousand, three hundred twenty-two".