2121135683 has 2 divisors, whose sum is σ = 2121135684. Its totient is φ = 2121135682.

The previous prime is 2121135673. The next prime is 2121135767. The reversal of 2121135683 is 3865311212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121135683 - 2¹² = 2121131587 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121135613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060567841 + 1060567842.

It is an arithmetic number, because the mean of its divisors is an integer number (1060567842).

Almost surely, 2^2121135683 is an apocalyptic number.

2121135683 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121135683 is an equidigital number, since it uses as much as digits as its factorization.

2121135683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 2121135683 is about 46055.7888109627. The cubic root of 2121135683 is about 1284.8610089539.

Adding to 2121135683 its reverse (3865311212), we get a palindrome (5986446895).

The spelling of 2121135683 in words is "two billion, one hundred twenty-one million, one hundred thirty-five thousand, six hundred eighty-three".