21330232202 has 4 divisors (see below), whose sum is σ = 31995348306. Its totient is φ = 10665116100.

The previous prime is 21330232201. The next prime is 21330232237. The reversal of 21330232202 is 20223203312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20603444521 + 726787681 = 143539^2 + 26959^2 .

It is not an unprimeable number, because it can be changed into a prime (21330232201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5332558049 + ... + 5332558052.

Almost surely, 2^21330232202 is an apocalyptic number.

21330232202 is a deficient number, since it is larger than the sum of its proper divisors (10665116104).

21330232202 is a wasteful number, since it uses less digits than its factorization.

21330232202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10665116103.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21330232202 its reverse (20223203312), we get a palindrome (41553435514).

The spelling of 21330232202 in words is "twenty-one billion, three hundred thirty million, two hundred thirty-two thousand, two hundred two".