221102202100 has 72 divisors (see below), whose sum is σ = 533366640128. Its totient is φ = 79004246400.

The previous prime is 221102202073. The next prime is 221102202121. The reversal of 221102202100 is 1202201122.

It is a happy number.

221102202100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2702904 + ... + 2783503.

Almost surely, 2^221102202100 is an apocalyptic number.

221102202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221102202100 is an abundant number, since it is smaller than the sum of its proper divisors (312264438028).

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

221102202100 is a wasteful number, since it uses less digits than its factorization.

221102202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5486465 (or 5486458 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221102202100 its reverse (1202201122), we get a palindrome (222304403222).

The spelling of 221102202100 in words is "two hundred twenty-one billion, one hundred two million, two hundred two thousand, one hundred".