2113032121 has 2 divisors, whose sum is σ = 2113032122. Its totient is φ = 2113032120.

The previous prime is 2113032109. The next prime is 2113032167. The reversal of 2113032121 is 1212303112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1469648896 + 643383225 = 38336^2 + 25365^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113032121 - 2⁷ = 2113031993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2113032095 and 2113032104.

It is not a weakly prime, because it can be changed into another prime (2113032821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056516060 + 1056516061.

It is an arithmetic number, because the mean of its divisors is an integer number (1056516061).

Almost surely, 2^2113032121 is an apocalyptic number.

It is an amenable number.

2113032121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113032121 is an equidigital number, since it uses as much as digits as its factorization.

2113032121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2113032121 is about 45967.7291259858. The cubic root of 2113032121 is about 1283.2226981854. Note that the first 3 decimals are identical.

Adding to 2113032121 its reverse (1212303112), we get a palindrome (3325335233).

The spelling of 2113032121 in words is "two billion, one hundred thirteen million, thirty-two thousand, one hundred twenty-one".