21323011120 has 40 divisors (see below), whose sum is σ = 51731483616. Its totient is φ = 8158368768.

The previous prime is 21323011109. The next prime is 21323011121. The reversal of 21323011120 is 2111032312.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 21323011094 and 21323011103.

It is not an unprimeable number, because it can be changed into a prime (21323011121) 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, 5792457 + ... + 5796136.

Almost surely, 2^21323011120 is an apocalyptic number.

21323011120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21323011120 is an abundant number, since it is smaller than the sum of its proper divisors (30408472496).

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

21323011120 is a wasteful number, since it uses less digits than its factorization.

21323011120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11588629 (or 11588623 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21323011120 its reverse (2111032312), we get a palindrome (23434043432).

The spelling of 21323011120 in words is "twenty-one billion, three hundred twenty-three million, eleven thousand, one hundred twenty".