221112201112202 has 4 divisors (see below), whose sum is σ = 331668301668306. Its totient is φ = 110556100556100.

The previous prime is 221112201112169. The next prime is 221112201112213. The reversal of 221112201112202 is 202211102211122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 218010865266481 + 3101335845721 = 14765191^2 + 1761061^2 .

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 as a sum of consecutive naturals, namely, 55278050278049 + ... + 55278050278052.

Almost surely, 2^{221112201112202} is an apocalyptic number.

221112201112202 is a deficient number, since it is larger than the sum of its proper divisors (110556100556104).

221112201112202 is a wasteful number, since it uses less digits than its factorization.

221112201112202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110556100556103.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221112201112202 its reverse (202211102211122), we get a palindrome (423323303323324).

The spelling of 221112201112202 in words is "two hundred twenty-one trillion, one hundred twelve billion, two hundred one million, one hundred twelve thousand, two hundred two".