211100111020201 has 8 divisors (see below), whose sum is σ = 227468266565960. Its totient is φ = 194750481969792.

The previous prime is 211100111020199. The next prime is 211100111020229. The reversal of 211100111020201 is 102020111001112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29636580714601 + 181463530305600 = 5443949^2 + 13470840^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211100111020201 - 2¹ = 211100111020199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211100111020231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4631600166 + ... + 4631645743.

It is an arithmetic number, because the mean of its divisors is an integer number (28433533320745).

Almost surely, 2^{211100111020201} is an apocalyptic number.

It is an amenable number.

211100111020201 is a deficient number, since it is larger than the sum of its proper divisors (16368155545759).

211100111020201 is a wasteful number, since it uses less digits than its factorization.

211100111020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9263247675.

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

Adding to 211100111020201 its reverse (102020111001112), we get a palindrome (313120222021313).

The spelling of 211100111020201 in words is "two hundred eleven trillion, one hundred billion, one hundred eleven million, twenty thousand, two hundred one".