221002202111202 has 36 divisors (see below), whose sum is σ = 505366531435350. Its totient is φ = 69790169085696.

The previous prime is 221002202111153. The next prime is 221002202111203. The reversal of 221002202111202 is 202111202200122.

It is a happy number.

221002202111202 is a `hidden beast` number, since 2 + 210 + 0 + 220 + 21 + 11 + 202 = 666.

It can be written as a sum of positive squares in only one way, i.e., 194405603729481 + 26596598381721 = 13942941^2 + 5157189^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (221002202111203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17005395327 + ... + 17005408322.

Almost surely, 2^{221002202111202} is an apocalyptic number.

221002202111202 is an abundant number, since it is smaller than the sum of its proper divisors (284364329324148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221002202111202 is a wasteful number, since it uses less digits than its factorization.

221002202111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34010803695 (or 34010803673 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221002202111202 its reverse (202111202200122), we get a palindrome (423113404311324).

The spelling of 221002202111202 in words is "two hundred twenty-one trillion, two billion, two hundred two million, one hundred eleven thousand, two hundred two".