21113300120 has 32 divisors (see below), whose sum is σ = 51823555920. Its totient is φ = 7677563520.

The previous prime is 21113300111. The next prime is 21113300123. The reversal of 21113300120 is 2100331112.

It is a junction number, because it is equal to n+sod(n) for n = 21113300095 and 21113300104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113300123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23991947 + ... + 23992826.

Almost surely, 2^21113300120 is an apocalyptic number.

21113300120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21113300120 is an abundant number, since it is smaller than the sum of its proper divisors (30710255800).

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

21113300120 is a wasteful number, since it uses less digits than its factorization.

21113300120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47984795 (or 47984791 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21113300120 its reverse (2100331112), we get a palindrome (23213631232).

It can be divided in two parts, 211 and 13300120, that added together give a palindrome (13300331).

The spelling of 21113300120 in words is "twenty-one billion, one hundred thirteen million, three hundred thousand, one hundred twenty".