221110201200202 has 4 divisors (see below), whose sum is σ = 331665301800306. Its totient is φ = 110555100600100.

The previous prime is 221110201200139. The next prime is 221110201200209. The reversal of 221110201200202 is 202002102011122.

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., 218617841204361 + 2492359995841 = 14785731^2 + 1578721^2 .

It is a super-2 number, since 2×221110201200202² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221110201200209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55277550300049 + ... + 55277550300052.

Almost surely, 2^{221110201200202} is an apocalyptic number.

221110201200202 is a deficient number, since it is larger than the sum of its proper divisors (110555100600104).

221110201200202 is a wasteful number, since it uses less digits than its factorization.

221110201200202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110555100600103.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221110201200202 its reverse (202002102011122), we get a palindrome (423112303211324).

The spelling of 221110201200202 in words is "two hundred twenty-one trillion, one hundred ten billion, two hundred one million, two hundred thousand, two hundred two".