11145222554 has 8 divisors (see below), whose sum is σ = 17033264820. Its totient is φ = 5467467616.

The previous prime is 11145222467. The next prime is 11145222563. The reversal of 11145222554 is 45522254111.

It can be written as a sum of positive squares in 2 ways, for example, as 8644722529 + 2500500025 = 92977^2 + 50005^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×11145222554⁴ (a number of 41 digits) contains 4444 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11145222554.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52571699 + ... + 52571910.

Almost surely, 2^11145222554 is an apocalyptic number.

11145222554 is a deficient number, since it is larger than the sum of its proper divisors (5888042266).

11145222554 is a wasteful number, since it uses less digits than its factorization.

11145222554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105143664.

The product of its digits is 16000, while the sum is 32.

Adding to 11145222554 its reverse (45522254111), we get a palindrome (56667476665).

The spelling of 11145222554 in words is "eleven billion, one hundred forty-five million, two hundred twenty-two thousand, five hundred fifty-four".