2001112021589 has 2 divisors, whose sum is σ = 2001112021590. Its totient is φ = 2001112021588.

The previous prime is 2001112021547. The next prime is 2001112021591. The reversal of 2001112021589 is 9851202111002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1118818138564 + 882293883025 = 1057742^2 + 939305^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001112021589 - 2²⁴ = 2001095244373 is a prime.

Together with 2001112021591, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001112021889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000556010794 + 1000556010795.

It is an arithmetic number, because the mean of its divisors is an integer number (1000556010795).

Almost surely, 2^{2001112021589} is an apocalyptic number.

It is an amenable number.

2001112021589 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001112021589 is an equidigital number, since it uses as much as digits as its factorization.

2001112021589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 32.

The spelling of 2001112021589 in words is "two trillion, one billion, one hundred twelve million, twenty-one thousand, five hundred eighty-nine".