2100221011201 has 4 divisors (see below), whose sum is σ = 2113598215252. Its totient is φ = 2086843807152.

The previous prime is 2100221011199. The next prime is 2100221011211. The reversal of 2100221011201 is 1021101220012.

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 1087734273025 + 1012486738176 = 1042945^2 + 1006224^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100221011201 - 2¹ = 2100221011199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100221011211) 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 3 ways as a sum of consecutive naturals, for example, 6688601790 + ... + 6688602103.

It is an arithmetic number, because the mean of its divisors is an integer number (528399553813).

Almost surely, 2^{2100221011201} is an apocalyptic number.

It is an amenable number.

2100221011201 is a deficient number, since it is larger than the sum of its proper divisors (13377204051).

2100221011201 is a wasteful number, since it uses less digits than its factorization.

2100221011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13377204050.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2100221011201 its reverse (1021101220012), we get a palindrome (3121322231213).

The spelling of 2100221011201 in words is "two trillion, one hundred billion, two hundred twenty-one million, eleven thousand, two hundred one".