21322434030 has 64 divisors (see below), whose sum is σ = 54091065600. Its totient is φ = 5364334080.

The previous prime is 21322434019. The next prime is 21322434031. The reversal of 21322434030 is 3043422312.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322434031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59761 + ... + 214979.

It is an arithmetic number, because the mean of its divisors is an integer number (845172900).

Almost surely, 2^21322434030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21322434030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27045532800).

21322434030 is an abundant number, since it is smaller than the sum of its proper divisors (32768631570).

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

21322434030 is a wasteful number, since it uses less digits than its factorization.

21322434030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155489.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 21322434030 its reverse (3043422312), we get a palindrome (24365856342).

The spelling of 21322434030 in words is "twenty-one billion, three hundred twenty-two million, four hundred thirty-four thousand, thirty".