1011112111217 has 32 divisors (see below), whose sum is σ = 1110827827200. Its totient is φ = 914767318080.

The previous prime is 1011112111213. The next prime is 1011112111223. The reversal of 1011112111217 is 7121112111101.

It is a cyclic number.

It is not a de Polignac number, because 1011112111217 - 2² = 1011112111213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011112111211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50884118 + ... + 50903984.

It is an arithmetic number, because the mean of its divisors is an integer number (34713369600).

Almost surely, 2^{1011112111217} is an apocalyptic number.

It is an amenable number.

1011112111217 is a deficient number, since it is larger than the sum of its proper divisors (99715715983).

1011112111217 is a wasteful number, since it uses less digits than its factorization.

1011112111217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20373.

The product of its (nonzero) digits is 28, while the sum is 20.

Adding to 1011112111217 its reverse (7121112111101), we get a palindrome (8132224222318).

The spelling of 1011112111217 in words is "one trillion, eleven billion, one hundred twelve million, one hundred eleven thousand, two hundred seventeen".