10001111211 has 48 divisors (see below), whose sum is σ = 18260342464. Its totient is φ = 5132719872.

The previous prime is 10001111209. The next prime is 10001111231. The reversal of 10001111211 is 11211110001.

It is not a de Polignac number, because 10001111211 - 2¹ = 10001111209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10001111193 and 10001111202.

It is not an unprimeable number, because it can be changed into a prime (10001111231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134716 + ... + 195321.

Almost surely, 2^10001111211 is an apocalyptic number.

10001111211 is a deficient number, since it is larger than the sum of its proper divisors (8259231253).

10001111211 is a wasteful number, since it uses less digits than its factorization.

10001111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330100 (or 330097 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 10001111211 its reverse (11211110001), we get a palindrome (21212221212).

The spelling of 10001111211 in words is "ten billion, one million, one hundred eleven thousand, two hundred eleven".