221021112021202 has 8 divisors (see below), whose sum is σ = 331531731112176. Its totient is φ = 110510534983812.

The previous prime is 221021112021191. The next prime is 221021112021211. The reversal of 221021112021202 is 202120211120122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221021112021202.

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, 15408513 + ... + 26066539.

It is an arithmetic number, because the mean of its divisors is an integer number (41441466389022).

Almost surely, 2^{221021112021202} is an apocalyptic number.

221021112021202 is a deficient number, since it is larger than the sum of its proper divisors (110510619090974).

221021112021202 is a wasteful number, since it uses less digits than its factorization.

221021112021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21026792.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221021112021202 its reverse (202120211120122), we get a palindrome (423141323141324).

The spelling of 221021112021202 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twelve million, twenty-one thousand, two hundred two".