5111112222 has 12 divisors (see below), whose sum is σ = 11074076520. Its totient is φ = 1703704068.

The previous prime is 5111112191. The next prime is 5111112229. The reversal of 5111112222 is 2222111115.

5111112222 is a `hidden beast` number, since 511 + 11 + 122 + 22 = 666.

It is a super-3 number, since 3×5111112222³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 283950679 = 5111112222 / (5 + 1 + 1 + 1 + 1 + 1 + 2 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 5111112195 and 5111112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5111112229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141975322 + ... + 141975357.

It is an arithmetic number, because the mean of its divisors is an integer number (922839710).

Almost surely, 2^5111112222 is an apocalyptic number.

5111112222 is an abundant number, since it is smaller than the sum of its proper divisors (5962964298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5111112222 is a wasteful number, since it uses less digits than its factorization.

5111112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283950687 (or 283950684 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 5111112222 is about 71492.0430677429. The cubic root of 5111112222 is about 1722.5498755853.

Adding to 5111112222 its reverse (2222111115), we get a palindrome (7333223337).

The spelling of 5111112222 in words is "five billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-two".