21133313083 has 2 divisors, whose sum is σ = 21133313084. Its totient is φ = 21133313082.

The previous prime is 21133313081. The next prime is 21133313137. The reversal of 21133313083 is 38031333112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21133313083 - 2¹ = 21133313081 is a prime.

Together with 21133313081, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21133313081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566656541 + 10566656542.

It is an arithmetic number, because the mean of its divisors is an integer number (10566656542).

Almost surely, 2^21133313083 is an apocalyptic number.

21133313083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21133313083 is an equidigital number, since it uses as much as digits as its factorization.

21133313083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 21133313083 its reverse (38031333112), we get a palindrome (59164646195).

The spelling of 21133313083 in words is "twenty-one billion, one hundred thirty-three million, three hundred thirteen thousand, eighty-three".