11211144345 has 24 divisors (see below), whose sum is σ = 19906620552. Its totient is φ = 5833440000.

The previous prime is 11211144331. The next prime is 11211144361. The reversal of 11211144345 is 54344111211.

It is a happy number.

11211144345 is a `hidden beast` number, since 1 + 1 + 211 + 1 + 443 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13483584 + 11197660761 = 3672^2 + 105819^2 .

It is not a de Polignac number, because 11211144345 - 2⁶ = 11211144281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3036406 + ... + 3040095.

It is an arithmetic number, because the mean of its divisors is an integer number (829442523).

Almost surely, 2^11211144345 is an apocalyptic number.

11211144345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11211144345 is a deficient number, since it is larger than the sum of its proper divisors (8695476207).

11211144345 is a wasteful number, since it uses less digits than its factorization.

11211144345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076553 (or 6076550 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

Adding to 11211144345 its reverse (54344111211), we get a palindrome (65555255556).

The spelling of 11211144345 in words is "eleven billion, two hundred eleven million, one hundred forty-four thousand, three hundred forty-five".