211111120201 has 2 divisors, whose sum is σ = 211111120202. Its totient is φ = 211111120200.

The previous prime is 211111120163. The next prime is 211111120249. The reversal of 211111120201 is 102021111112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207502114576 + 3609005625 = 455524^2 + 60075^2 .

It is a cyclic number.

It is not a de Polignac number, because 211111120201 - 2²⁷ = 210976902473 is a prime.

It is not a weakly prime, because it can be changed into another prime (211111120301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555560100 + 105555560101.

It is an arithmetic number, because the mean of its divisors is an integer number (105555560101).

Almost surely, 2^211111120201 is an apocalyptic number.

It is an amenable number.

211111120201 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111120201 is an equidigital number, since it uses as much as digits as its factorization.

211111120201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211111120201 its reverse (102021111112), we get a palindrome (313132231313).

It can be divided in two parts, 2111111 and 20201, that added together give a palindrome (2131312).

The spelling of 211111120201 in words is "two hundred eleven billion, one hundred eleven million, one hundred twenty thousand, two hundred one".