2121334403 has 2 divisors, whose sum is σ = 2121334404. Its totient is φ = 2121334402.

The previous prime is 2121334399. The next prime is 2121334417. The reversal of 2121334403 is 3044331212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121334403 - 2² = 2121334399 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121334463) 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, 1060667201 + 1060667202.

It is an arithmetic number, because the mean of its divisors is an integer number (1060667202).

Almost surely, 2^2121334403 is an apocalyptic number.

2121334403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121334403 is an equidigital number, since it uses as much as digits as its factorization.

2121334403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2121334403 is about 46057.9461439609. The cubic root of 2121334403 is about 1284.9011320522.

Adding to 2121334403 its reverse (3044331212), we get a palindrome (5165665615).

The spelling of 2121334403 in words is "two billion, one hundred twenty-one million, three hundred thirty-four thousand, four hundred three".