201021022021211 has 16 divisors (see below), whose sum is σ = 229841296843200. Its totient is φ = 172226503507968.

The previous prime is 201021022021207. The next prime is 201021022021223. The reversal of 201021022021211 is 112120220120102.

It is not a de Polignac number, because 201021022021211 - 2² = 201021022021207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201021022021211.

It is not an unprimeable number, because it can be changed into a prime (201021022021201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250189505 + ... + 250991693.

It is an arithmetic number, because the mean of its divisors is an integer number (14365081052700).

Almost surely, 2^{201021022021211} is an apocalyptic number.

201021022021211 is a deficient number, since it is larger than the sum of its proper divisors (28820274821989).

201021022021211 is a wasteful number, since it uses less digits than its factorization.

201021022021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818198.

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

Adding to 201021022021211 its reverse (112120220120102), we get a palindrome (313141242141313).

The spelling of 201021022021211 in words is "two hundred one trillion, twenty-one billion, twenty-two million, twenty-one thousand, two hundred eleven".