211211111100201 has 16 divisors (see below), whose sum is σ = 282310235504640. Its totient is φ = 140459794322960.

The previous prime is 211211111100193. The next prime is 211211111100247. The reversal of 211211111100201 is 102001111112112.

It is a cyclic number.

It is not a de Polignac number, because 211211111100201 - 2³ = 211211111100193 is a prime.

It is a super-2 number, since 2×211211111100201² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211211111100271) 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, 3468135 + ... + 20843468.

It is an arithmetic number, because the mean of its divisors is an integer number (17644389719040).

Almost surely, 2^{211211111100201} is an apocalyptic number.

It is an amenable number.

211211111100201 is a deficient number, since it is larger than the sum of its proper divisors (71099124404439).

211211111100201 is a wasteful number, since it uses less digits than its factorization.

211211111100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24318756.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 211211111100201 its reverse (102001111112112), we get a palindrome (313212222212313).

The spelling of 211211111100201 in words is "two hundred eleven trillion, two hundred eleven billion, one hundred eleven million, one hundred thousand, two hundred one".