21333311120 has 80 divisors (see below), whose sum is σ = 54136410048. Its totient is φ = 7753643520.

The previous prime is 21333311107. The next prime is 21333311123. The reversal of 21333311120 is 2111333312.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×21333311120² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 21333311092 and 21333311101.

It is not an unprimeable number, because it can be changed into a prime (21333311123) 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, 2174867 + ... + 2184653.

Almost surely, 2^21333311120 is an apocalyptic number.

21333311120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21333311120 is an abundant number, since it is smaller than the sum of its proper divisors (32803098928).

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

21333311120 is a wasteful number, since it uses less digits than its factorization.

21333311120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12288 (or 12282 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21333311120 its reverse (2111333312), we get a palindrome (23444644432).

It can be divided in two parts, 213 and 33311120, that added together give a palindrome (33311333).

The spelling of 21333311120 in words is "twenty-one billion, three hundred thirty-three million, three hundred eleven thousand, one hundred twenty".