10112111212111 has 4 divisors (see below), whose sum is σ = 10112156479224. Its totient is φ = 10112065945000.

The previous prime is 10112111212103. The next prime is 10112111212123. The reversal of 10112111212111 is 11121211121101.

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 10112111212111 - 2³ = 10112111212103 is a prime.

It is a super-2 number, since 2×10112111212111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10112111212811) 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, 22296805 + ... + 22745806.

It is an arithmetic number, because the mean of its divisors is an integer number (2528039119806).

Almost surely, 2^{10112111212111} is an apocalyptic number.

10112111212111 is a deficient number, since it is larger than the sum of its proper divisors (45267113).

10112111212111 is an equidigital number, since it uses as much as digits as its factorization.

10112111212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45267112.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 10112111212111 its reverse (11121211121101), we get a palindrome (21233322333212).

The spelling of 10112111212111 in words is "ten trillion, one hundred twelve billion, one hundred eleven million, two hundred twelve thousand, one hundred eleven".