101111111001011 has 4 divisors (see below), whose sum is σ = 101142678631752. Its totient is φ = 101079543370272.

The previous prime is 101111111000989. The next prime is 101111111001023. The reversal of 101111111001011 is 110100111111101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101111111001011 - 2¹⁸ = 101111110738867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101111111000983 and 101111111001001.

It is not an unprimeable number, because it can be changed into a prime (101111111001031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15783810566 + ... + 15783816971.

It is an arithmetic number, because the mean of its divisors is an integer number (25285669657938).

Almost surely, 2^{101111111001011} is an apocalyptic number.

101111111001011 is a deficient number, since it is larger than the sum of its proper divisors (31567630741).

101111111001011 is an equidigital number, since it uses as much as digits as its factorization.

101111111001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31567630740.

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 101111111001011 its reverse (110100111111101), we get a palindrome (211211222112112).

The spelling of 101111111001011 in words is "one hundred one trillion, one hundred eleven billion, one hundred eleven million, one thousand, eleven".