21335529041111 has 2 divisors, whose sum is σ = 21335529041112. Its totient is φ = 21335529041110.

The previous prime is 21335529041087. The next prime is 21335529041149. The reversal of 21335529041111 is 11114092553312.

It is an a-pointer prime, because the next prime (21335529041149) can be obtained adding 21335529041111 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21335529041111 - 2¹⁴ = 21335529024727 is a prime.

It is a super-2 number, since 2×21335529041111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21335529041711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10667764520555 + 10667764520556.

It is an arithmetic number, because the mean of its divisors is an integer number (10667764520556).

Almost surely, 2^{21335529041111} is an apocalyptic number.

21335529041111 is a deficient number, since it is larger than the sum of its proper divisors (1).

21335529041111 is an equidigital number, since it uses as much as digits as its factorization.

21335529041111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 21335529041111 in words is "twenty-one trillion, three hundred thirty-five billion, five hundred twenty-nine million, forty-one thousand, one hundred eleven".