11112211101 has 4 divisors (see below), whose sum is σ = 14816281472. Its totient is φ = 7408140732.

The previous prime is 11112211093. The next prime is 11112211127. The reversal of 11112211101 is 10111221111.

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.

It is not a de Polignac number, because 11112211101 - 2³ = 11112211093 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 (11112211141) 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, 1852035181 + ... + 1852035186.

It is an arithmetic number, because the mean of its divisors is an integer number (3704070368).

Almost surely, 2^11112211101 is an apocalyptic number.

It is an amenable number.

11112211101 is a deficient number, since it is larger than the sum of its proper divisors (3704070371).

11112211101 is an equidigital number, since it uses as much as digits as its factorization.

11112211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3704070370.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11112211101 its reverse (10111221111), we get a palindrome (21223432212).

It can be divided in two parts, 1111221110 and 1, that added together give a palindrome (1111221111).

The spelling of 11112211101 in words is "eleven billion, one hundred twelve million, two hundred eleven thousand, one hundred one".