2001333222121 has 8 divisors (see below), whose sum is σ = 2010769092864. Its totient is φ = 1991916990480.

The previous prime is 2001333222089. The next prime is 2001333222149. The reversal of 2001333222121 is 1212223331002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001333222121 - 2⁵ = 2001333222089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001333222092 and 2001333222101.

It is not an unprimeable number, because it can be changed into a prime (2001333222181) 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 7 ways as a sum of consecutive naturals, for example, 4705465 + ... + 5113126.

It is an arithmetic number, because the mean of its divisors is an integer number (251346136608).

Almost surely, 2^{2001333222121} is an apocalyptic number.

It is an amenable number.

2001333222121 is a deficient number, since it is larger than the sum of its proper divisors (9435870743).

2001333222121 is an equidigital number, since it uses as much as digits as its factorization.

2001333222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9819551.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2001333222121 its reverse (1212223331002), we get a palindrome (3213556553123).

The spelling of 2001333222121 in words is "two trillion, one billion, three hundred thirty-three million, two hundred twenty-two thousand, one hundred twenty-one".