211101111009 has 32 divisors (see below), whose sum is σ = 320088637440. Its totient is φ = 137429759376.

The previous prime is 211101110981. The next prime is 211101111037. The reversal of 211101111009 is 900111101112.

It is an interprime number because it is at equal distance from previous prime (211101110981) and next prime (211101111037).

It is not a de Polignac number, because 211101111009 - 2⁵ = 211101110977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211101110982 and 211101111000.

It is not an unprimeable number, because it can be changed into a prime (211101111049) 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, 5748384 + ... + 5784990.

It is an arithmetic number, because the mean of its divisors is an integer number (10002769920).

Almost surely, 2^211101111009 is an apocalyptic number.

It is an amenable number.

211101111009 is a deficient number, since it is larger than the sum of its proper divisors (108987526431).

211101111009 is a wasteful number, since it uses less digits than its factorization.

211101111009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41626 (or 41620 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 18.

The spelling of 211101111009 in words is "two hundred eleven billion, one hundred one million, one hundred eleven thousand, nine".