221101100002 has 16 divisors (see below), whose sum is σ = 335203875000. Its totient is φ = 109368230400.

The previous prime is 221101099931. The next prime is 221101100041. The reversal of 221101100002 is 200001101122.

It can be written as a sum of positive squares in 4 ways, for example, as 217222177041 + 3878922961 = 466071^2 + 62281^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185877 + ... + 690472.

Almost surely, 2^221101100002 is an apocalyptic number.

221101100002 is a deficient number, since it is larger than the sum of its proper divisors (114102774998).

221101100002 is a wasteful number, since it uses less digits than its factorization.

221101100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877701.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 221101100002 its reverse (200001101122), we get a palindrome (421102201124).

The spelling of 221101100002 in words is "two hundred twenty-one billion, one hundred one million, one hundred thousand, two".