11100100011001 has 2 divisors, whose sum is σ = 11100100011002. Its totient is φ = 11100100011000.

The previous prime is 11100100010999. The next prime is 11100100011017. The reversal of 11100100011001 is 10011000100111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8902471657401 + 2197628353600 = 2983701^2 + 1482440^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100100011001 - 2¹ = 11100100010999 is a prime.

Together with 11100100010999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11100100041001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550050005500 + 5550050005501.

It is an arithmetic number, because the mean of its divisors is an integer number (5550050005501).

Almost surely, 2^{11100100011001} is an apocalyptic number.

It is an amenable number.

11100100011001 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100100011001 is an equidigital number, since it uses as much as digits as its factorization.

11100100011001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 11100100011001 its reverse (10011000100111), we get a palindrome (21111100111112).

The spelling of 11100100011001 in words is "eleven trillion, one hundred billion, one hundred million, eleven thousand, one".