21232303002 has 12 divisors (see below), whose sum is σ = 46003323210. Its totient is φ = 7077434328.

The previous prime is 21232302997. The next prime is 21232303003. The reversal of 21232303002 is 20030323212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16600003281 + 4632299721 = 128841^2 + 68061^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1179572389 = 21232303002 / (2 + 1 + 2 + 3 + 2 + 3 + 0 + 3 + 0 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (21232303003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 589786177 + ... + 589786212.

Almost surely, 2^21232303002 is an apocalyptic number.

21232303002 is an abundant number, since it is smaller than the sum of its proper divisors (24771020208).

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

21232303002 is a wasteful number, since it uses less digits than its factorization.

21232303002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179572397 (or 1179572394 counting only the distinct ones).

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

Adding to 21232303002 its reverse (20030323212), we get a palindrome (41262626214).

The spelling of 21232303002 in words is "twenty-one billion, two hundred thirty-two million, three hundred three thousand, two".