201111121221202 has 4 divisors (see below), whose sum is σ = 301666681831806. Its totient is φ = 100555560610600.

The previous prime is 201111121221169. The next prime is 201111121221229. The reversal of 201111121221202 is 202122121111102.

It is a happy number.

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., 187002315664641 + 14108805556561 = 13674879^2 + 3756169^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 201111121221202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50277780305299 + ... + 50277780305302.

Almost surely, 2^{201111121221202} is an apocalyptic number.

201111121221202 is a deficient number, since it is larger than the sum of its proper divisors (100555560610604).

201111121221202 is a wasteful number, since it uses less digits than its factorization.

201111121221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100555560610603.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201111121221202 its reverse (202122121111102), we get a palindrome (403233242332304).

The spelling of 201111121221202 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred two".