21010384021224 has 32 divisors (see below), whose sum is σ = 56566418519520. Its totient is φ = 6464733544896.

The previous prime is 21010384021111. The next prime is 21010384021229. The reversal of 21010384021224 is 42212048301012.

It is a junction number, because it is equal to n+sod(n) for n = 21010384021191 and 21010384021200.

It is not an unprimeable number, because it can be changed into a prime (21010384021229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33670486902 + ... + 33670487525.

It is an arithmetic number, because the mean of its divisors is an integer number (1767700578735).

Almost surely, 2^{21010384021224} is an apocalyptic number.

21010384021224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21010384021224 is an abundant number, since it is smaller than the sum of its proper divisors (35556034498296).

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

21010384021224 is a wasteful number, since it uses less digits than its factorization.

21010384021224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67340974449 (or 67340974445 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The spelling of 21010384021224 in words is "twenty-one trillion, ten billion, three hundred eighty-four million, twenty-one thousand, two hundred twenty-four".