221122200100202 has 4 divisors (see below), whose sum is σ = 331683300150306. Its totient is φ = 110561100050100.

The previous prime is 221122200100129. The next prime is 221122200100237. The reversal of 221122200100202 is 202001002221122.

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., 115137213500401 + 105984986599801 = 10730201^2 + 10294901^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55280550025049 + ... + 55280550025052.

Almost surely, 2^{221122200100202} is an apocalyptic number.

221122200100202 is a deficient number, since it is larger than the sum of its proper divisors (110561100050104).

221122200100202 is a wasteful number, since it uses less digits than its factorization.

221122200100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110561100050103.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221122200100202 its reverse (202001002221122), we get a palindrome (423123202321324).

The spelling of 221122200100202 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, two hundred million, one hundred thousand, two hundred two".