21335311360 has 88 divisors (see below), whose sum is σ = 55832596416. Its totient is φ = 7758274560.

The previous prime is 21335311357. The next prime is 21335311363. The reversal of 21335311360 is 6311353312.

It is an interprime number because it is at equal distance from previous prime (21335311357) and next prime (21335311363).

It is a tau number, because it is divible by the number of its divisors (88).

It is not an unprimeable number, because it can be changed into a prime (21335311363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133092 + ... + 245731.

Almost surely, 2^21335311360 is an apocalyptic number.

21335311360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21335311360 is an abundant number, since it is smaller than the sum of its proper divisors (34497285056).

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

21335311360 is a wasteful number, since it uses less digits than its factorization.

21335311360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378859 (or 378841 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 28.

Adding to 21335311360 its reverse (6311353312), we get a palindrome (27646664672).

The spelling of 21335311360 in words is "twenty-one billion, three hundred thirty-five million, three hundred eleven thousand, three hundred sixty".