21353140333 has 8 divisors (see below), whose sum is σ = 24697608768. Its totient is φ = 18082176864.

The previous prime is 21353140297. The next prime is 21353140363. The reversal of 21353140333 is 33304135312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21353140333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21353140363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18375616 + ... + 18376777.

It is an arithmetic number, because the mean of its divisors is an integer number (3087201096).

Almost surely, 2^21353140333 is an apocalyptic number.

It is an amenable number.

21353140333 is a deficient number, since it is larger than the sum of its proper divisors (3344468435).

21353140333 is an equidigital number, since it uses as much as digits as its factorization.

21353140333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36752483.

The product of its (nonzero) digits is 9720, while the sum is 28.

Adding to 21353140333 its reverse (33304135312), we get a palindrome (54657275645).

The spelling of 21353140333 in words is "twenty-one billion, three hundred fifty-three million, one hundred forty thousand, three hundred thirty-three".