21032133193 has 2 divisors, whose sum is σ = 21032133194. Its totient is φ = 21032133192.

The previous prime is 21032133191. The next prime is 21032133247. The reversal of 21032133193 is 39133123012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20933170489 + 98962704 = 144683^2 + 9948^2 .

It is a cyclic number.

It is not a de Polignac number, because 21032133193 - 2¹ = 21032133191 is a prime.

Together with 21032133191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21032133191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516066596 + 10516066597.

It is an arithmetic number, because the mean of its divisors is an integer number (10516066597).

Almost surely, 2^21032133193 is an apocalyptic number.

It is an amenable number.

21032133193 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032133193 is an equidigital number, since it uses as much as digits as its factorization.

21032133193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 28.

The spelling of 21032133193 in words is "twenty-one billion, thirty-two million, one hundred thirty-three thousand, one hundred ninety-three".