2001332132161 has 2 divisors, whose sum is σ = 2001332132162. Its totient is φ = 2001332132160.

The previous prime is 2001332132101. The next prime is 2001332132183. The reversal of 2001332132161 is 1612312331002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2000934727936 + 397404225 = 1414544^2 + 19935^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001332132161 - 2¹⁷ = 2001332001089 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001332132101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000666066080 + 1000666066081.

It is an arithmetic number, because the mean of its divisors is an integer number (1000666066081).

Almost surely, 2^{2001332132161} is an apocalyptic number.

It is an amenable number.

2001332132161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001332132161 is an equidigital number, since it uses as much as digits as its factorization.

2001332132161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 2001332132161 its reverse (1612312331002), we get a palindrome (3613644463163).

The spelling of 2001332132161 in words is "two trillion, one billion, three hundred thirty-two million, one hundred thirty-two thousand, one hundred sixty-one".