211002111101 has 4 divisors (see below), whose sum is σ = 211489414332. Its totient is φ = 210514807872.

The previous prime is 211002111097. The next prime is 211002111107. The reversal of 211002111101 is 101111200112.

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 102895959076 + 108106152025 = 320774^2 + 328795^2 .

It is a cyclic number.

It is not a de Polignac number, because 211002111101 - 2² = 211002111097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211002111107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243650966 + ... + 243651831.

It is an arithmetic number, because the mean of its divisors is an integer number (52872353583).

Almost surely, 2^211002111101 is an apocalyptic number.

It is an amenable number.

211002111101 is a deficient number, since it is larger than the sum of its proper divisors (487303231).

211002111101 is an equidigital number, since it uses as much as digits as its factorization.

211002111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487303230.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 211002111101 its reverse (101111200112), we get a palindrome (312113311213).

The spelling of 211002111101 in words is "two hundred eleven billion, two million, one hundred eleven thousand, one hundred one".