100011211111 has 32 divisors (see below), whose sum is σ = 117586331136. Its totient is φ = 83296080000.

The previous prime is 100011211093. The next prime is 100011211129. The reversal of 100011211111 is 111112110001.

It is an interprime number because it is at equal distance from previous prime (100011211093) and next prime (100011211129).

It is not a de Polignac number, because 100011211111 - 2⁹ = 100011210599 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 (100011211171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21172996 + ... + 21177718.

It is an arithmetic number, because the mean of its divisors is an integer number (3674572848).

Almost surely, 2^100011211111 is an apocalyptic number.

100011211111 is a deficient number, since it is larger than the sum of its proper divisors (17575120025).

100011211111 is a wasteful number, since it uses less digits than its factorization.

100011211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5383.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 100011211111 its reverse (111112110001), we get a palindrome (211123321112).

The spelling of 100011211111 in words is "one hundred billion, eleven million, two hundred eleven thousand, one hundred eleven".