2102201212201 has 4 divisors (see below), whose sum is σ = 2102499108052. Its totient is φ = 2101903316352.

The previous prime is 2102201212193. The next prime is 2102201212291. The reversal of 2102201212201 is 1022121022012.

It is a happy number.

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 2098963488400 + 3237723801 = 1448780^2 + 56901^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102201212201 - 2³ = 2102201212193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102201212291) 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, 148937340 + ... + 148951453.

It is an arithmetic number, because the mean of its divisors is an integer number (525624777013).

Almost surely, 2^{2102201212201} is an apocalyptic number.

It is an amenable number.

2102201212201 is a deficient number, since it is larger than the sum of its proper divisors (297895851).

2102201212201 is an equidigital number, since it uses as much as digits as its factorization.

2102201212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297895850.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2102201212201 its reverse (1022121022012), we get a palindrome (3124322234213).

The spelling of 2102201212201 in words is "two trillion, one hundred two billion, two hundred one million, two hundred twelve thousand, two hundred one".