2001331221131 has 8 divisors (see below), whose sum is σ = 2190290588928. Its totient is φ = 1813541881000.

The previous prime is 2001331221101. The next prime is 2001331221257. The reversal of 2001331221131 is 1311221331002.

It is a happy number.

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 2001331221131 - 2³⁴ = 1984151351947 is a prime.

It is a super-2 number, since 2×2001331221131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001331221101) 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, 292503335 + ... + 292510176.

It is an arithmetic number, because the mean of its divisors is an integer number (273786323616).

Almost surely, 2^{2001331221131} is an apocalyptic number.

2001331221131 is a deficient number, since it is larger than the sum of its proper divisors (188959367797).

2001331221131 is a wasteful number, since it uses less digits than its factorization.

2001331221131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585013833.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2001331221131 its reverse (1311221331002), we get a palindrome (3312552552133).

It can be divided in two parts, 200 and 1331221131, that added together give a palindrome (1331221331).

The spelling of 2001331221131 in words is "two trillion, one billion, three hundred thirty-one million, two hundred twenty-one thousand, one hundred thirty-one".