21010202222 has 8 divisors (see below), whose sum is σ = 32248217496. Its totient is φ = 10260796392.

The previous prime is 21010202207. The next prime is 21010202249. The reversal of 21010202222 is 22220201012.

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 = 21010202197 and 21010202206.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 122152253 + ... + 122152424.

It is an arithmetic number, because the mean of its divisors is an integer number (4031027187).

Almost surely, 2^21010202222 is an apocalyptic number.

21010202222 is a deficient number, since it is larger than the sum of its proper divisors (11238015274).

21010202222 is a wasteful number, since it uses less digits than its factorization.

21010202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244304722.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21010202222 its reverse (22220201012), we get a palindrome (43230403234).

The spelling of 21010202222 in words is "twenty-one billion, ten million, two hundred two thousand, two hundred twenty-two".