11112312101 has 4 divisors (see below), whose sum is σ = 12122522304. Its totient is φ = 10102101900.

The previous prime is 11112312073. The next prime is 11112312137. The reversal of 11112312101 is 10121321111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10121321111 = 11 ⋅920120101.

It is a de Polignac number, because none of the positive numbers 2^k-11112312101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112312181) 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, 505105085 + ... + 505105106.

It is an arithmetic number, because the mean of its divisors is an integer number (3030630576).

Almost surely, 2^11112312101 is an apocalyptic number.

11112312101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11112312101 is a deficient number, since it is larger than the sum of its proper divisors (1010210203).

11112312101 is a wasteful number, since it uses less digits than its factorization.

11112312101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010210202.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11112312101 its reverse (10121321111), we get a palindrome (21233633212).

The spelling of 11112312101 in words is "eleven billion, one hundred twelve million, three hundred twelve thousand, one hundred one".