11100211001 has 12 divisors (see below), whose sum is σ = 12203609712. Its totient is φ = 10088991000.

The previous prime is 11100210983. The next prime is 11100211009. The reversal of 11100211001 is 10011200111.

It is a happy number.

It is not a de Polignac number, because 11100211001 - 2¹⁸ = 11099948857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11100211001.

It is not an unprimeable number, because it can be changed into a prime (11100211009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1094966 + ... + 1105056.

It is an arithmetic number, because the mean of its divisors is an integer number (1016967476).

Almost surely, 2^11100211001 is an apocalyptic number.

11100211001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11100211001 is a deficient number, since it is larger than the sum of its proper divisors (1103398711).

11100211001 is a wasteful number, since it uses less digits than its factorization.

11100211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19204 (or 19193 counting only the distinct ones).

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

Adding to 11100211001 its reverse (10011200111), we get a palindrome (21111411112).

The spelling of 11100211001 in words is "eleven billion, one hundred million, two hundred eleven thousand, one".