21111410120 has 16 divisors (see below), whose sum is σ = 47500672860. Its totient is φ = 8444564032.

The previous prime is 21111410083. The next prime is 21111410123. The reversal of 21111410120 is 2101411112.

It can be written as a sum of positive squares in 2 ways, for example, as 19503239716 + 1608170404 = 139654^2 + 40102^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21111410095 and 21111410104.

It is not an unprimeable number, because it can be changed into a prime (21111410123) 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 3 ways as a sum of consecutive naturals, for example, 263892587 + ... + 263892666.

Almost surely, 2^21111410120 is an apocalyptic number.

21111410120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21111410120 is an abundant number, since it is smaller than the sum of its proper divisors (26389262740).

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

21111410120 is a wasteful number, since it uses less digits than its factorization.

21111410120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527785264 (or 527785260 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21111410120 its reverse (2101411112), we get a palindrome (23212821232).

The spelling of 21111410120 in words is "twenty-one billion, one hundred eleven million, four hundred ten thousand, one hundred twenty".