21330012202 has 4 divisors (see below), whose sum is σ = 31995018306. Its totient is φ = 10665006100.

The previous prime is 21330012181. The next prime is 21330012203. The reversal of 21330012202 is 20221003312.

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., 18785717721 + 2544294481 = 137061^2 + 50441^2 .

It is not an unprimeable number, because it can be changed into a prime (21330012203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5332503049 + ... + 5332503052.

Almost surely, 2^21330012202 is an apocalyptic number.

21330012202 is a deficient number, since it is larger than the sum of its proper divisors (10665006104).

21330012202 is a wasteful number, since it uses less digits than its factorization.

21330012202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10665006103.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21330012202 its reverse (20221003312), we get a palindrome (41551015514).

The spelling of 21330012202 in words is "twenty-one billion, three hundred thirty million, twelve thousand, two hundred two".