11112211144 has 32 divisors (see below), whose sum is σ = 21602361600. Its totient is φ = 5353162560.

The previous prime is 11112211141. The next prime is 11112211157. The reversal of 11112211144 is 44111221111.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

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 7 ways as a sum of consecutive naturals, for example, 42399 + ... + 154990.

It is an arithmetic number, because the mean of its divisors is an integer number (675073800).

Almost surely, 2^11112211144 is an apocalyptic number.

It is an amenable number.

11112211144 is a deficient number, since it is larger than the sum of its proper divisors (10490150456).

11112211144 is a wasteful number, since it uses less digits than its factorization.

11112211144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197653 (or 197649 counting only the distinct ones).

The product of its digits is 64, while the sum is 19.

Adding to 11112211144 its reverse (44111221111), we get a palindrome (55223432255).

The spelling of 11112211144 in words is "eleven billion, one hundred twelve million, two hundred eleven thousand, one hundred forty-four".