1010111111111 has 4 divisors (see below), whose sum is σ = 1015344847632. Its totient is φ = 1004877374592.

The previous prime is 1010111111099. The next prime is 1010111111201. The reversal of 1010111111111 is 1111111110101.

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 1010111111111 - 2²² = 1010106916807 is a prime.

It is a Duffinian number.

1010111111111 is a modest number, since divided by 1111111 gives 101011 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1010111111092 and 1010111111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010111110111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2616867971 + ... + 2616868356.

It is an arithmetic number, because the mean of its divisors is an integer number (253836211908).

Almost surely, 2^{1010111111111} is an apocalyptic number.

1010111111111 is a deficient number, since it is larger than the sum of its proper divisors (5233736521).

1010111111111 is an equidigital number, since it uses as much as digits as its factorization.

1010111111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233736520.

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

Adding to 1010111111111 its reverse (1111111110101), we get a palindrome (2121222221212).

It can be divided in two parts, 10101 and 11111111, that multiplied together give a palindrome (112233332211).

The spelling of 1010111111111 in words is "one trillion, ten billion, one hundred eleven million, one hundred eleven thousand, one hundred eleven".