2113132121 has 2 divisors, whose sum is σ = 2113132122. Its totient is φ = 2113132120.

The previous prime is 2113132117. The next prime is 2113132127. The reversal of 2113132121 is 1212313112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2085200896 + 27931225 = 45664^2 + 5285^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113132121 - 2² = 2113132117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2113132121.

It is not a weakly prime, because it can be changed into another prime (2113132127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056566060 + 1056566061.

It is an arithmetic number, because the mean of its divisors is an integer number (1056566061).

Almost surely, 2^2113132121 is an apocalyptic number.

It is an amenable number.

2113132121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113132121 is an equidigital number, since it uses as much as digits as its factorization.

2113132121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 17.

The square root of 2113132121 is about 45968.8168327182. The cubic root of 2113132121 is about 1283.2429408569.

Adding to 2113132121 its reverse (1212313112), we get a palindrome (3325445233).

The spelling of 2113132121 in words is "two billion, one hundred thirteen million, one hundred thirty-two thousand, one hundred twenty-one".