100011211 has 4 divisors (see below), whose sum is σ = 100173400. Its totient is φ = 99849024.

The previous prime is 100011203. The next prime is 100011217. The reversal of 100011211 is 112110001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100011211 - 2³ = 100011203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100011194 and 100011203.

It is not an unprimeable number, because it can be changed into a prime (100011217) 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, 80166 + ... + 81403.

It is an arithmetic number, because the mean of its divisors is an integer number (25043350).

Almost surely, 2^100011211 is an apocalyptic number.

100011211 is a deficient number, since it is larger than the sum of its proper divisors (162189).

100011211 is an equidigital number, since it uses as much as digits as its factorization.

100011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162188.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 100011211 is about 10000.5605342901. The cubic root of 100011211 is about 464.1762283306.

Adding to 100011211 its reverse (112110001), we get a palindrome (212121212).

The spelling of 100011211 in words is "one hundred million, eleven thousand, two hundred eleven".