21444312030 has 32 divisors (see below), whose sum is σ = 51539817888. Its totient is φ = 5710320000.

The previous prime is 21444311951. The next prime is 21444312059. The reversal of 21444312030 is 3021344412.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 488821 + ... + 530880.

It is an arithmetic number, because the mean of its divisors is an integer number (1610619309).

Almost surely, 2^21444312030 is an apocalyptic number.

21444312030 is an abundant number, since it is smaller than the sum of its proper divisors (30095505858).

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

21444312030 is a wasteful number, since it uses less digits than its factorization.

21444312030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020412.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21444312030 its reverse (3021344412), we get a palindrome (24465656442).

The spelling of 21444312030 in words is "twenty-one billion, four hundred forty-four million, three hundred twelve thousand, thirty".