21083203331 has 2 divisors, whose sum is σ = 21083203332. Its totient is φ = 21083203330.

The previous prime is 21083203303. The next prime is 21083203343. The reversal of 21083203331 is 13330238012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21083203331 - 2¹⁴ = 21083186947 is a prime.

It is a super-2 number, since 2×21083203331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21083203331.

It is not a weakly prime, because it can be changed into another prime (21083203381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10541601665 + 10541601666.

It is an arithmetic number, because the mean of its divisors is an integer number (10541601666).

Almost surely, 2^21083203331 is an apocalyptic number.

21083203331 is a deficient number, since it is larger than the sum of its proper divisors (1).

21083203331 is an equidigital number, since it uses as much as digits as its factorization.

21083203331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 21083203331 in words is "twenty-one billion, eighty-three million, two hundred three thousand, three hundred thirty-one".