21336828043 has 2 divisors, whose sum is σ = 21336828044. Its totient is φ = 21336828042.

The previous prime is 21336828017. The next prime is 21336828053. The reversal of 21336828043 is 34082863312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21336828043 - 2²⁵ = 21303273611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21336827987 and 21336828005.

It is not a weakly prime, because it can be changed into another prime (21336828053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10668414021 + 10668414022.

It is an arithmetic number, because the mean of its divisors is an integer number (10668414022).

Almost surely, 2^21336828043 is an apocalyptic number.

21336828043 is a deficient number, since it is larger than the sum of its proper divisors (1).

21336828043 is an equidigital number, since it uses as much as digits as its factorization.

21336828043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 21336828043 in words is "twenty-one billion, three hundred thirty-six million, eight hundred twenty-eight thousand, forty-three".