221010212200100 has 36 divisors (see below), whose sum is σ = 479593175361300. Its totient is φ = 88403897804160.

The previous prime is 221010212200081. The next prime is 221010212200139. The reversal of 221010212200100 is 1002212010122.

It can be written as a sum of positive squares in 6 ways, for example, as 5160284683876 + 215849927516224 = 2271626^2 + 14691832^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51267146 + ... + 55410654.

It is an arithmetic number, because the mean of its divisors is an integer number (13322032648925).

Almost surely, 2^{221010212200100} is an apocalyptic number.

221010212200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221010212200100 is an abundant number, since it is smaller than the sum of its proper divisors (258582963161200).

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

221010212200100 is a wasteful number, since it uses less digits than its factorization.

221010212200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4676912 (or 4676905 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221010212200100 its reverse (1002212010122), we get a palindrome (222012424210222).

The spelling of 221010212200100 in words is "two hundred twenty-one trillion, ten billion, two hundred twelve million, two hundred thousand, one hundred".