21344421000032 has 48 divisors (see below), whose sum is σ = 45272549194992. Its totient is φ = 9847293657600.

The previous prime is 21344421000013. The next prime is 21344421000083. The reversal of 21344421000032 is 23000012444312.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 21344420999965 and 21344421000010.

It is a congruent number.

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, 9326594 + ... + 11387457.

It is an arithmetic number, because the mean of its divisors is an integer number (943178108229).

Almost surely, 2^{21344421000032} is an apocalyptic number.

It is an amenable number.

21344421000032 is an abundant number, since it is smaller than the sum of its proper divisors (23928128194960).

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

21344421000032 is a wasteful number, since it uses less digits than its factorization.

21344421000032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20716551 (or 20716543 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21344421000032 its reverse (23000012444312), we get a palindrome (44344433444344).

The spelling of 21344421000032 in words is "twenty-one trillion, three hundred forty-four billion, four hundred twenty-one million, thirty-two", and thus it is an aban number.