21030202222 has 8 divisors (see below), whose sum is σ = 31840119576. Its totient is φ = 10416829032.

The previous prime is 21030202213. The next prime is 21030202243. The reversal of 21030202222 is 22220203012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21030202196 and 21030202205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49135773 + ... + 49136200.

It is an arithmetic number, because the mean of its divisors is an integer number (3980014947).

Almost surely, 2^21030202222 is an apocalyptic number.

21030202222 is a deficient number, since it is larger than the sum of its proper divisors (10809917354).

21030202222 is a wasteful number, since it uses less digits than its factorization.

21030202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98272082.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 21030202222 its reverse (22220203012), we get a palindrome (43250405234).

The spelling of 21030202222 in words is "twenty-one billion, thirty million, two hundred two thousand, two hundred twenty-two".