21111011310224 has 40 divisors (see below), whose sum is σ = 44674185044160. Its totient is φ = 9584476841600.

The previous prime is 21111011310211. The next prime is 21111011310253. The reversal of 21111011310224 is 42201311011112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21111011310196 and 21111011310205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71335607 + ... + 71630934.

It is an arithmetic number, because the mean of its divisors is an integer number (1116854626104).

Almost surely, 2^{21111011310224} is an apocalyptic number.

It is an amenable number.

21111011310224 is an abundant number, since it is smaller than the sum of its proper divisors (23563173733936).

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

21111011310224 is a wasteful number, since it uses less digits than its factorization.

21111011310224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142967399 (or 142967393 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 21111011310224 its reverse (42201311011112), we get a palindrome (63312322321336).

The spelling of 21111011310224 in words is "twenty-one trillion, one hundred eleven billion, eleven million, three hundred ten thousand, two hundred twenty-four".