2101200002221 has 32 divisors (see below), whose sum is σ = 2181806928000. Its totient is φ = 2022647058432.

The previous prime is 2101200002207. The next prime is 2101200002243. The reversal of 2101200002221 is 1222000021012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2101200002221 - 2²¹ = 2101197905069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101200009221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 496852935 + ... + 496857163.

It is an arithmetic number, because the mean of its divisors is an integer number (68181466500).

Almost surely, 2^{2101200002221} is an apocalyptic number.

It is an amenable number.

2101200002221 is a deficient number, since it is larger than the sum of its proper divisors (80606925779).

2101200002221 is an equidigital number, since it uses as much as digits as its factorization.

2101200002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5341.

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

Adding to 2101200002221 its reverse (1222000021012), we get a palindrome (3323200023233).

The spelling of 2101200002221 in words is "two trillion, one hundred one billion, two hundred million, two thousand, two hundred twenty-one".