21011031222202 has 16 divisors (see below), whose sum is σ = 36302524139520. Its totient is φ = 8933824298448.

The previous prime is 21011031222193. The next prime is 21011031222217. The reversal of 21011031222202 is 20222213011012.

It is a self number, because there is not a number n which added to its sum of digits gives 21011031222202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5908612177 + ... + 5908615732.

It is an arithmetic number, because the mean of its divisors is an integer number (2268907758720).

Almost surely, 2^{21011031222202} is an apocalyptic number.

21011031222202 is a deficient number, since it is larger than the sum of its proper divisors (15291492917318).

21011031222202 is a wasteful number, since it uses less digits than its factorization.

21011031222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11817228045.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21011031222202 its reverse (20222213011012), we get a palindrome (41233244233214).

The spelling of 21011031222202 in words is "twenty-one trillion, eleven billion, thirty-one million, two hundred twenty-two thousand, two hundred two".