21033201593 has 2 divisors, whose sum is σ = 21033201594. Its totient is φ = 21033201592.

The previous prime is 21033201521. The next prime is 21033201599. The reversal of 21033201593 is 39510233012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16587379264 + 4445822329 = 128792^2 + 66677^2 .

It is a cyclic number.

It is not a de Polignac number, because 21033201593 - 2¹⁴ = 21033185209 is a prime.

It is not a weakly prime, because it can be changed into another prime (21033201599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516600796 + 10516600797.

It is an arithmetic number, because the mean of its divisors is an integer number (10516600797).

Almost surely, 2^21033201593 is an apocalyptic number.

It is an amenable number.

21033201593 is a deficient number, since it is larger than the sum of its proper divisors (1).

21033201593 is an equidigital number, since it uses as much as digits as its factorization.

21033201593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 29.

The spelling of 21033201593 in words is "twenty-one billion, thirty-three million, two hundred one thousand, five hundred ninety-three".