221211210200122 has 8 divisors (see below), whose sum is σ = 332057088161172. Its totient is φ = 110525514146400.

The previous prime is 221211210200107. The next prime is 221211210200153. The reversal of 221211210200122 is 221002012112122.

It can be written as a sum of positive squares in 2 ways, for example, as 207716380192161 + 13494830007961 = 14412369^2 + 3673531^2 .

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 221211210200122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40045473379 + ... + 40045478902.

Almost surely, 2^{221211210200122} is an apocalyptic number.

221211210200122 is a deficient number, since it is larger than the sum of its proper divisors (110845877961050).

221211210200122 is a wasteful number, since it uses less digits than its factorization.

221211210200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80090953664.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221211210200122 its reverse (221002012112122), we get a palindrome (442213222312244).

The spelling of 221211210200122 in words is "two hundred twenty-one trillion, two hundred eleven billion, two hundred ten million, two hundred thousand, one hundred twenty-two".