11344421111 has 4 divisors (see below), whose sum is σ = 11347029192. Its totient is φ = 11341813032.

The previous prime is 11344421107. The next prime is 11344421129. The reversal of 11344421111 is 11112444311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11112444311 = 44879 ⋅247609.

It is a cyclic number.

It is not a de Polignac number, because 11344421111 - 2² = 11344421107 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 (11344421131) 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, 1297505 + ... + 1306218.

It is an arithmetic number, because the mean of its divisors is an integer number (2836757298).

Almost surely, 2^11344421111 is an apocalyptic number.

11344421111 is a deficient number, since it is larger than the sum of its proper divisors (2608081).

11344421111 is an equidigital number, since it uses as much as digits as its factorization.

11344421111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608080.

The product of its digits is 384, while the sum is 23.

Adding to 11344421111 its reverse (11112444311), we get a palindrome (22456865422).

The spelling of 11344421111 in words is "eleven billion, three hundred forty-four million, four hundred twenty-one thousand, one hundred eleven".