2121120211589 has 2 divisors, whose sum is σ = 2121120211590. Its totient is φ = 2121120211588.

The previous prime is 2121120211571. The next prime is 2121120211591. The reversal of 2121120211589 is 9851120211212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1092045900100 + 1029074311489 = 1045010^2 + 1014433^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121120211589 - 2²⁰ = 2121119163013 is a prime.

It is a super-2 number, since 2×2121120211589² (a number of 25 digits) contains 22 as substring.

Together with 2121120211591, 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 (2121120211519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060560105794 + 1060560105795.

It is an arithmetic number, because the mean of its divisors is an integer number (1060560105795).

Almost surely, 2^{2121120211589} is an apocalyptic number.

It is an amenable number.

2121120211589 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121120211589 is an equidigital number, since it uses as much as digits as its factorization.

2121120211589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 35.

The spelling of 2121120211589 in words is "two trillion, one hundred twenty-one billion, one hundred twenty million, two hundred eleven thousand, five hundred eighty-nine".