21203302202 has 4 divisors (see below), whose sum is σ = 31804953306. Its totient is φ = 10601651100.

The previous prime is 21203302171. The next prime is 21203302213. The reversal of 21203302202 is 20220330212.

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., 20192125801 + 1011176401 = 142099^2 + 31799^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5300825549 + ... + 5300825552.

Almost surely, 2^21203302202 is an apocalyptic number.

21203302202 is a deficient number, since it is larger than the sum of its proper divisors (10601651104).

21203302202 is a wasteful number, since it uses less digits than its factorization.

21203302202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10601651103.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21203302202 its reverse (20220330212), we get a palindrome (41423632414).

The spelling of 21203302202 in words is "twenty-one billion, two hundred three million, three hundred two thousand, two hundred two".