101111101101001 has 16 divisors (see below), whose sum is σ = 102253862469888. Its totient is φ = 99971132400000.

The previous prime is 101111101100927. The next prime is 101111101101013. The reversal of 101111101101001 is 100101101111101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101111101101001 - 2¹⁹ = 101111100576713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101111101101401) 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, 2310930541 + ... + 2310974293.

It is an arithmetic number, because the mean of its divisors is an integer number (6390866404368).

Almost surely, 2^{101111101101001} is an apocalyptic number.

It is an amenable number.

101111101101001 is a deficient number, since it is larger than the sum of its proper divisors (1142761368887).

101111101101001 is a wasteful number, since it uses less digits than its factorization.

101111101101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75072.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 101111101101001 its reverse (100101101111101), we get a palindrome (201212202212102).

The spelling of 101111101101001 in words is "one hundred one trillion, one hundred eleven billion, one hundred one million, one hundred one thousand, one".