101001111001011 has 24 divisors (see below), whose sum is σ = 158243147557040. Its totient is φ = 61707374945856.

The previous prime is 101001111001009. The next prime is 101001111001019. The reversal of 101001111001011 is 110100111100101.

It is not a de Polignac number, because 101001111001011 - 2¹ = 101001111001009 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 101001111000984 and 101001111001002.

It is not an unprimeable number, because it can be changed into a prime (101001111001019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3105226036 + ... + 3105258561.

Almost surely, 2^{101001111001011} is an apocalyptic number.

101001111001011 is a deficient number, since it is larger than the sum of its proper divisors (57242036556029).

101001111001011 is a wasteful number, since it uses less digits than its factorization.

101001111001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210484755 (or 6210484752 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 101001111001011 its reverse (110100111100101), we get a palindrome (211101222101112).

The spelling of 101001111001011 in words is "one hundred one trillion, one billion, one hundred eleven million, one thousand, eleven".