221210221220202 has 32 divisors (see below), whose sum is σ = 442568148894144. Its totient is φ = 73712124864000.

The previous prime is 221210221220167. The next prime is 221210221220231. The reversal of 221210221220202 is 202022122012122.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 419768577 + ... + 420295227.

It is an arithmetic number, because the mean of its divisors is an integer number (13830254652942).

Almost surely, 2^{221210221220202} is an apocalyptic number.

221210221220202 is an abundant number, since it is smaller than the sum of its proper divisors (221357927673942).

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

221210221220202 is a wasteful number, since it uses less digits than its factorization.

221210221220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549894.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221210221220202 its reverse (202022122012122), we get a palindrome (423232343232324).

The spelling of 221210221220202 in words is "two hundred twenty-one trillion, two hundred ten billion, two hundred twenty-one million, two hundred twenty thousand, two hundred two".