21202303032 has 192 divisors, whose sum is σ = 61624761120. Its totient is φ = 6562258944.

The previous prime is 21202302997. The next prime is 21202303033. The reversal of 21202303032 is 23030320212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21202302996 and 21202303014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202303033) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38064898 + ... + 38065454.

Almost surely, 2^21202303032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21202303032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30812380560).

21202303032 is an abundant number, since it is smaller than the sum of its proper divisors (40422458088).

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

21202303032 is a wasteful number, since it uses less digits than its factorization.

21202303032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21202303032 its reverse (23030320212), we get a palindrome (44232623244).

The spelling of 21202303032 in words is "twenty-one billion, two hundred two million, three hundred three thousand, thirty-two".