221131122202 has 8 divisors (see below), whose sum is σ = 331703183700. Its totient is φ = 110563394304.

The previous prime is 221131122181. The next prime is 221131122281. The reversal of 221131122202 is 202221131122.

221131122202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 197572249081 + 23558873121 = 444491^2 + 153489^2 .

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 221131122202.

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, 952677 + ... + 1161832.

Almost surely, 2^221131122202 is an apocalyptic number.

221131122202 is a deficient number, since it is larger than the sum of its proper divisors (110572061498).

221131122202 is a wasteful number, since it uses less digits than its factorization.

221131122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166800.

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

Adding to 221131122202 its reverse (202221131122), we get a palindrome (423352253324).

It can be divided in two parts, 221131122 and 202, that multiplied together give a palindrome (44668486644).

The spelling of 221131122202 in words is "two hundred twenty-one billion, one hundred thirty-one million, one hundred twenty-two thousand, two hundred two".