2001224134331 has 4 divisors (see below), whose sum is σ = 2003976850512. Its totient is φ = 1998471418152.

The previous prime is 2001224134313. The next prime is 2001224134387. The reversal of 2001224134331 is 1334314221002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2001224134331 - 2¹⁴ = 2001224117947 is a prime.

It is a super-2 number, since 2×2001224134331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001224134331.

It is not an unprimeable number, because it can be changed into a prime (2001224131331) 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 3 ways as a sum of consecutive naturals, for example, 1376357000 + ... + 1376358453.

It is an arithmetic number, because the mean of its divisors is an integer number (500994212628).

Almost surely, 2^{2001224134331} is an apocalyptic number.

2001224134331 is a deficient number, since it is larger than the sum of its proper divisors (2752716181).

2001224134331 is an equidigital number, since it uses as much as digits as its factorization.

2001224134331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752716180.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 2001224134331 its reverse (1334314221002), we get a palindrome (3335538355333).

The spelling of 2001224134331 in words is "two trillion, one billion, two hundred twenty-four million, one hundred thirty-four thousand, three hundred thirty-one".