21333353152 has 28 divisors (see below), whose sum is σ = 42965222680. Its totient is φ = 10507470336.

The previous prime is 21333353131. The next prime is 21333353221. The reversal of 21333353152 is 25135333312.

It is a super-2 number, since 2×21333353152² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2483277 + ... + 2491852.

Almost surely, 2^21333353152 is an apocalyptic number.

It is an amenable number.

21333353152 is an abundant number, since it is smaller than the sum of its proper divisors (21631869528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21333353152 is an equidigital number, since it uses as much as digits as its factorization.

21333353152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975208 (or 4975198 counting only the distinct ones).

The product of its digits is 24300, while the sum is 31.

Adding to 21333353152 its reverse (25135333312), we get a palindrome (46468686464).

The spelling of 21333353152 in words is "twenty-one billion, three hundred thirty-three million, three hundred fifty-three thousand, one hundred fifty-two".