2123135587 has 2 divisors, whose sum is σ = 2123135588. Its totient is φ = 2123135586.

The previous prime is 2123135569. The next prime is 2123135603. The reversal of 2123135587 is 7855313212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2123135587 - 2⁷ = 2123135459 is a prime.

It is not a weakly prime, because it can be changed into another prime (2123135537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061567793 + 1061567794.

It is an arithmetic number, because the mean of its divisors is an integer number (1061567794).

Almost surely, 2^2123135587 is an apocalyptic number.

2123135587 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123135587 is an equidigital number, since it uses as much as digits as its factorization.

2123135587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 2123135587 is about 46077.4954505993. The cubic root of 2123135587 is about 1285.2646907388.

Adding to 2123135587 its reverse (7855313212), we get a palindrome (9978448799).

The spelling of 2123135587 in words is "two billion, one hundred twenty-three million, one hundred thirty-five thousand, five hundred eighty-seven".