1011111210111 has 16 divisors (see below), whose sum is σ = 1384840019808. Its totient is φ = 655734988800.

The previous prime is 1011111210077. The next prime is 1011111210121. The reversal of 1011111210111 is 1110121111101.

It is a de Polignac number, because none of the positive numbers 2^k-1011111210111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011111210121) 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, 233130 + ... + 1441031.

It is an arithmetic number, because the mean of its divisors is an integer number (86552501238).

Almost surely, 2^{1011111210111} is an apocalyptic number.

1011111210111 is a deficient number, since it is larger than the sum of its proper divisors (373728809697).

1011111210111 is a wasteful number, since it uses less digits than its factorization.

1011111210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679642.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 1011111210111 its reverse (1110121111101), we get a palindrome (2121232321212).

The spelling of 1011111210111 in words is "one trillion, eleven billion, one hundred eleven million, two hundred ten thousand, one hundred eleven".