2121133021187 has 2 divisors, whose sum is σ = 2121133021188. Its totient is φ = 2121133021186.

The previous prime is 2121133021181. The next prime is 2121133021207. The reversal of 2121133021187 is 7811203311212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121133021187 - 2¹⁰ = 2121133020163 is a prime.

It is a super-3 number, since 3×2121133021187³ (a number of 38 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2121133021181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060566510593 + 1060566510594.

It is an arithmetic number, because the mean of its divisors is an integer number (1060566510594).

Almost surely, 2^{2121133021187} is an apocalyptic number.

2121133021187 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121133021187 is an equidigital number, since it uses as much as digits as its factorization.

2121133021187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

Adding to 2121133021187 its reverse (7811203311212), we get a palindrome (9932336332399).

The spelling of 2121133021187 in words is "two trillion, one hundred twenty-one billion, one hundred thirty-three million, twenty-one thousand, one hundred eighty-seven".