2113303121 has 2 divisors, whose sum is σ = 2113303122. Its totient is φ = 2113303120.

The previous prime is 2113303097. The next prime is 2113303147. The reversal of 2113303121 is 1213033112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1891293121 + 222010000 = 43489^2 + 14900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113303121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2113303121.

It is not a weakly prime, because it can be changed into another prime (2113303021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056651560 + 1056651561.

It is an arithmetic number, because the mean of its divisors is an integer number (1056651561).

Almost surely, 2^2113303121 is an apocalyptic number.

It is an amenable number.

2113303121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113303121 is an equidigital number, since it uses as much as digits as its factorization.

2113303121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2113303121 is about 45970.6767515989. The cubic root of 2113303121 is about 1283.2775543456.

Adding to 2113303121 its reverse (1213033112), we get a palindrome (3326336233).

The spelling of 2113303121 in words is "two billion, one hundred thirteen million, three hundred three thousand, one hundred twenty-one".