211202012021201 has 4 divisors (see below), whose sum is σ = 223625659787172. Its totient is φ = 198778364255232.

The previous prime is 211202012021153. The next prime is 211202012021359. The reversal of 211202012021201 is 102120210202112.

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 109408441102801 + 101793570918400 = 10459849^2 + 10089280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211202012021201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 12423647765953 = 211202012021201 / (2 + 1 + 1 + 2 + 0 + 2 + 0 + 1 + 2 + 0 + 2 + 1 + 2 + 0 + 1).

It is a self number, because there is not a number n which added to its sum of digits gives 211202012021201.

It is not an unprimeable number, because it can be changed into a prime (211202012021101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6211823882960 + ... + 6211823882993.

It is an arithmetic number, because the mean of its divisors is an integer number (55906414946793).

Almost surely, 2^{211202012021201} is an apocalyptic number.

It is an amenable number.

211202012021201 is a deficient number, since it is larger than the sum of its proper divisors (12423647765971).

211202012021201 is a wasteful number, since it uses less digits than its factorization.

211202012021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12423647765970.

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

Adding to 211202012021201 its reverse (102120210202112), we get a palindrome (313322222223313).

The spelling of 211202012021201 in words is "two hundred eleven trillion, two hundred two billion, twelve million, twenty-one thousand, two hundred one".