11100401001 has 8 divisors (see below), whose sum is σ = 16445038560. Its totient is φ = 7400267316.

The previous prime is 11100400999. The next prime is 11100401029. The reversal of 11100401001 is 10010400111.

11100401001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11100401001 - 2¹ = 11100400999 is a prime.

It is a super-3 number, since 3×11100401001³ (a number of 31 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (11100401801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205562955 + ... + 205563008.

It is an arithmetic number, because the mean of its divisors is an integer number (2055629820).

Almost surely, 2^11100401001 is an apocalyptic number.

It is an amenable number.

11100401001 is a deficient number, since it is larger than the sum of its proper divisors (5344637559).

11100401001 is an equidigital number, since it uses as much as digits as its factorization.

11100401001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411125972 (or 411125966 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11100401001 its reverse (10010400111), we get a palindrome (21110801112).

The spelling of 11100401001 in words is "eleven billion, one hundred million, four hundred one thousand, one".