21044214024 has 32 divisors (see below), whose sum is σ = 53276496000. Its totient is φ = 6925943232.

The previous prime is 21044214019. The next prime is 21044214029. The reversal of 21044214024 is 42041244012.

It is an interprime number because it is at equal distance from previous prime (21044214019) and next prime (21044214029).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 21044213985 and 21044214003.

It is not an unprimeable number, because it can be changed into a prime (21044214029) 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, 5547739 + ... + 5551530.

It is an arithmetic number, because the mean of its divisors is an integer number (1664890500).

Almost surely, 2^21044214024 is an apocalyptic number.

21044214024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21044214024 is an abundant number, since it is smaller than the sum of its proper divisors (32232281976).

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

21044214024 is a wasteful number, since it uses less digits than its factorization.

21044214024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11099357 (or 11099353 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 21044214024 its reverse (42041244012), we get a palindrome (63085458036).

The spelling of 21044214024 in words is "twenty-one billion, forty-four million, two hundred fourteen thousand, twenty-four".