2121333113 has 2 divisors, whose sum is σ = 2121333114. Its totient is φ = 2121333112.

The previous prime is 2121333107. The next prime is 2121333121. The reversal of 2121333113 is 3113331212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1706681344 + 414651769 = 41312^2 + 20363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121333113 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121333143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060666556 + 1060666557.

It is an arithmetic number, because the mean of its divisors is an integer number (1060666557).

Almost surely, 2^2121333113 is an apocalyptic number.

It is an amenable number.

2121333113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121333113 is an equidigital number, since it uses as much as digits as its factorization.

2121333113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 20.

The square root of 2121333113 is about 46057.9321398606. The cubic root of 2121333113 is about 1284.9008715994.

Adding to 2121333113 its reverse (3113331212), we get a palindrome (5234664325).

The spelling of 2121333113 in words is "two billion, one hundred twenty-one million, three hundred thirty-three thousand, one hundred thirteen".