21003444232032 has 24 divisors (see below), whose sum is σ = 55134041109336. Its totient is φ = 7001148077312.

The previous prime is 21003444232031. The next prime is 21003444232039. The reversal of 21003444232032 is 23023244430012.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×21003444232032² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003444232031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109392938613 + ... + 109392938804.

It is an arithmetic number, because the mean of its divisors is an integer number (2297251712889).

Almost surely, 2^{21003444232032} is an apocalyptic number.

It is an amenable number.

21003444232032 is an abundant number, since it is smaller than the sum of its proper divisors (34130596877304).

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

21003444232032 is a wasteful number, since it uses less digits than its factorization.

21003444232032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218785877430 (or 218785877422 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 21003444232032 its reverse (23023244430012), we get a palindrome (44026688662044).

The spelling of 21003444232032 in words is "twenty-one trillion, three billion, four hundred forty-four million, two hundred thirty-two thousand, thirty-two".