221100001221102 has 32 divisors (see below), whose sum is σ = 453041656932480. Its totient is φ = 71897284761120.

The previous prime is 221100001221041. The next prime is 221100001221103. The reversal of 221100001221102 is 201122100001122.

221100001221102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100001221103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528136477 + ... + 528554952.

It is an arithmetic number, because the mean of its divisors is an integer number (14157551779140).

Almost surely, 2^{221100001221102} is an apocalyptic number.

221100001221102 is an abundant number, since it is smaller than the sum of its proper divisors (231941655711378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221100001221102 is a wasteful number, since it uses less digits than its factorization.

221100001221102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056692288.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221100001221102 its reverse (201122100001122), we get a palindrome (422222101222224).

The spelling of 221100001221102 in words is "two hundred twenty-one trillion, one hundred billion, one million, two hundred twenty-one thousand, one hundred two".