2001120211031 has 2 divisors, whose sum is σ = 2001120211032. Its totient is φ = 2001120211030.

The previous prime is 2001120210983. The next prime is 2001120211033. The reversal of 2001120211031 is 1301120211002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001120211031 - 2⁶ = 2001120210967 is a prime.

It is a super-2 number, since 2×2001120211031² (a number of 25 digits) contains 22 as substring.

Together with 2001120211033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001120210997 and 2001120211015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001120211033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000560105515 + 1000560105516.

It is an arithmetic number, because the mean of its divisors is an integer number (1000560105516).

Almost surely, 2^{2001120211031} is an apocalyptic number.

2001120211031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001120211031 is an equidigital number, since it uses as much as digits as its factorization.

2001120211031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 2001120211031 its reverse (1301120211002), we get a palindrome (3302240422033).

The spelling of 2001120211031 in words is "two trillion, one billion, one hundred twenty million, two hundred eleven thousand, thirty-one".