2111011001 has 16 divisors (see below), whose sum is σ = 2407743360. Its totient is φ = 1835545360.

The previous prime is 2111010971. The next prime is 2111011027. The reversal of 2111011001 is 1001101112.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2111011001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2111011001.

It is not an unprimeable number, because it can be changed into a prime (2111011501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125951 + ... + 141723.

It is an arithmetic number, because the mean of its divisors is an integer number (150483960).

Almost surely, 2^2111011001 is an apocalyptic number.

It is an amenable number.

2111011001 is a deficient number, since it is larger than the sum of its proper divisors (296732359).

2111011001 is an equidigital number, since it uses as much as digits as its factorization.

2111011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15853 (or 15807 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 2111011001 is about 45945.7397480985. The cubic root of 2111011001 is about 1282.8134325327.

Adding to 2111011001 its reverse (1001101112), we get a palindrome (3112112113).

The spelling of 2111011001 in words is "two billion, one hundred eleven million, eleven thousand, one".