2132001321991 has 2 divisors, whose sum is σ = 2132001321992. Its totient is φ = 2132001321990.

The previous prime is 2132001321977. The next prime is 2132001322037. The reversal of 2132001321991 is 1991231002312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2132001321991 - 2⁹ = 2132001321479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2132001322991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066000660995 + 1066000660996.

It is an arithmetic number, because the mean of its divisors is an integer number (1066000660996).

Almost surely, 2^{2132001321991} is an apocalyptic number.

2132001321991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2132001321991 is an equidigital number, since it uses as much as digits as its factorization.

2132001321991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

It can be divided in two parts, 2132001321 and 991, that added together give a palindrome (2132002312).

The spelling of 2132001321991 in words is "two trillion, one hundred thirty-two billion, one million, three hundred twenty-one thousand, nine hundred ninety-one".