211210222100201 has 4 divisors (see below), whose sum is σ = 212377129404804. Its totient is φ = 210043314795600.

The previous prime is 211210222100177. The next prime is 211210222100231. The reversal of 211210222100201 is 102001222012112.

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 112173411528025 + 99036810572176 = 10591195^2 + 9951724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211210222100201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211210222100201.

It is not an unprimeable number, because it can be changed into a prime (211210222100231) 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, 583453652030 + ... + 583453652391.

It is an arithmetic number, because the mean of its divisors is an integer number (53094282351201).

Almost surely, 2^{211210222100201} is an apocalyptic number.

It is an amenable number.

211210222100201 is a deficient number, since it is larger than the sum of its proper divisors (1166907304603).

211210222100201 is a wasteful number, since it uses less digits than its factorization.

211210222100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166907304602.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211210222100201 its reverse (102001222012112), we get a palindrome (313211444112313).

The spelling of 211210222100201 in words is "two hundred eleven trillion, two hundred ten billion, two hundred twenty-two million, one hundred thousand, two hundred one".