21441110521224 has 64 divisors (see below), whose sum is σ = 54018931968000. Its totient is φ = 7091745148224.

The previous prime is 21441110521213. The next prime is 21441110521297. The reversal of 21441110521224 is 42212501114412.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21441110521191 and 21441110521200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4363482 + ... + 7869065.

It is an arithmetic number, because the mean of its divisors is an integer number (844045812000).

Almost surely, 2^{21441110521224} is an apocalyptic number.

21441110521224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21441110521224 is an abundant number, since it is smaller than the sum of its proper divisors (32577821446776).

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

21441110521224 is a wasteful number, since it uses less digits than its factorization.

21441110521224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12233122 (or 12233118 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

Adding to 21441110521224 its reverse (42212501114412), we get a palindrome (63653611635636).

The spelling of 21441110521224 in words is "twenty-one trillion, four hundred forty-one billion, one hundred ten million, five hundred twenty-one thousand, two hundred twenty-four".