11100101001 has 32 divisors (see below), whose sum is σ = 17002275840. Its totient is φ = 6375758400.

The previous prime is 11100100997. The next prime is 11100101029. The reversal of 11100101001 is 10010100111.

It is not a de Polignac number, because 11100101001 - 2² = 11100100997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11100101081) 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, 15646 + ... + 149816.

It is an arithmetic number, because the mean of its divisors is an integer number (531321120).

Almost surely, 2^11100101001 is an apocalyptic number.

11100101001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11100101001 is a deficient number, since it is larger than the sum of its proper divisors (5902174839).

11100101001 is a wasteful number, since it uses less digits than its factorization.

11100101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134317.

The product of its (nonzero) digits is 1, while the sum is 6.

Adding to 11100101001 its reverse (10010100111), we get a palindrome (21110201112).

It can be divided in two parts, 11100 and 101001, that added together give a triangular number (112101 = T₄₇₃).

The spelling of 11100101001 in words is "eleven billion, one hundred million, one hundred one thousand, one".