21135375333 has 16 divisors (see below), whose sum is σ = 31550692800. Its totient is φ = 13982688720.

The previous prime is 21135375329. The next prime is 21135375337. The reversal of 21135375333 is 33357353112.

21135375333 is a `hidden beast` number, since 2 + 113 + 5 + 3 + 7 + 533 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (21135375329) and next prime (21135375337).

It is not a de Polignac number, because 21135375333 - 2² = 21135375329 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21135375337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2984218 + ... + 2991291.

It is an arithmetic number, because the mean of its divisors is an integer number (1971918300).

Almost surely, 2^21135375333 is an apocalyptic number.

It is an amenable number.

21135375333 is a deficient number, since it is larger than the sum of its proper divisors (10415317467).

21135375333 is a wasteful number, since it uses less digits than its factorization.

21135375333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5975649 (or 5975643 counting only the distinct ones).

The product of its digits is 85050, while the sum is 36.

The spelling of 21135375333 in words is "twenty-one billion, one hundred thirty-five million, three hundred seventy-five thousand, three hundred thirty-three".