21111410023 has 24 divisors (see below), whose sum is σ = 23734728864. Its totient is φ = 18756978240.

The previous prime is 21111409967. The next prime is 21111410041. The reversal of 21111410023 is 32001411112.

It is not a de Polignac number, because 21111410023 - 2²¹ = 21109312871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21111409979 and 21111410006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111410083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1680361 + ... + 1692877.

It is an arithmetic number, because the mean of its divisors is an integer number (988947036).

Almost surely, 2^21111410023 is an apocalyptic number.

21111410023 is a deficient number, since it is larger than the sum of its proper divisors (2623318841).

21111410023 is a wasteful number, since it uses less digits than its factorization.

21111410023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12855 (or 12844 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21111410023 its reverse (32001411112), we get a palindrome (53112821135).

It can be divided in two parts, 21111 and 410023, that added together give a palindrome (431134).

The spelling of 21111410023 in words is "twenty-one billion, one hundred eleven million, four hundred ten thousand, twenty-three".