2102221100201 has 4 divisors (see below), whose sum is σ = 2102224306692. Its totient is φ = 2102217893712.

The previous prime is 2102221100197. The next prime is 2102221100227. The reversal of 2102221100201 is 1020011222012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1168777210000 + 933443890201 = 1081100^2 + 966149^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102221100201 - 2² = 2102221100197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2102221108201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224726 + ... + 2062751.

It is an arithmetic number, because the mean of its divisors is an integer number (525556076673).

Almost surely, 2^{2102221100201} is an apocalyptic number.

It is an amenable number.

2102221100201 is a deficient number, since it is larger than the sum of its proper divisors (3206491).

2102221100201 is an equidigital number, since it uses as much as digits as its factorization.

2102221100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206490.

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

Adding to 2102221100201 its reverse (1020011222012), we get a palindrome (3122232322213).

The spelling of 2102221100201 in words is "two trillion, one hundred two billion, two hundred twenty-one million, one hundred thousand, two hundred one".