21133331299 has 2 divisors, whose sum is σ = 21133331300. Its totient is φ = 21133331298.

The previous prime is 21133331291. The next prime is 21133331311. The reversal of 21133331299 is 99213333112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21133331299 - 2³ = 21133331291 is a prime.

It is not a weakly prime, because it can be changed into another prime (21133331291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566665649 + 10566665650.

It is an arithmetic number, because the mean of its divisors is an integer number (10566665650).

Almost surely, 2^21133331299 is an apocalyptic number.

21133331299 is a deficient number, since it is larger than the sum of its proper divisors (1).

21133331299 is an equidigital number, since it uses as much as digits as its factorization.

21133331299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 37.

The spelling of 21133331299 in words is "twenty-one billion, one hundred thirty-three million, three hundred thirty-one thousand, two hundred ninety-nine".