2133448921 has 2 divisors, whose sum is σ = 2133448922. Its totient is φ = 2133448920.

The previous prime is 2133448883. The next prime is 2133448931. The reversal of 2133448921 is 1298443312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1802936521 + 330512400 = 42461^2 + 18180^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133448921 - 2²³ = 2125060313 is a prime.

It is not a weakly prime, because it can be changed into another prime (2133448931) 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, 1066724460 + 1066724461.

It is an arithmetic number, because the mean of its divisors is an integer number (1066724461).

Almost surely, 2^2133448921 is an apocalyptic number.

It is an amenable number.

2133448921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133448921 is an equidigital number, since it uses as much as digits as its factorization.

2133448921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The square root of 2133448921 is about 46189.2727914177. The cubic root of 2133448921 is about 1287.3424287762.

The spelling of 2133448921 in words is "two billion, one hundred thirty-three million, four hundred forty-eight thousand, nine hundred twenty-one".