2001321211131 has 48 divisors (see below), whose sum is σ = 3239318964960. Its totient is φ = 1179961896960.

The previous prime is 2001321211103. The next prime is 2001321211187. The reversal of 2001321211131 is 1311121231002.

2001321211131 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 321 + 211 + 131 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-2001321211131 is a prime.

It is a super-2 number, since 2×2001321211131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2001321216131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26530075 + ... + 26605403.

It is an arithmetic number, because the mean of its divisors is an integer number (67485811770).

Almost surely, 2^{2001321211131} is an apocalyptic number.

2001321211131 is a deficient number, since it is larger than the sum of its proper divisors (1237997753829).

2001321211131 is a wasteful number, since it uses less digits than its factorization.

2001321211131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82636 (or 82633 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2001321211131 its reverse (1311121231002), we get a palindrome (3312442442133).

The spelling of 2001321211131 in words is "two trillion, one billion, three hundred twenty-one million, two hundred eleven thousand, one hundred thirty-one".