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2222112122 = 21111056061
BaseRepresentation
bin1000010001110010…
…1011110101111010
312201212021222202222
42010130223311322
514022330041442
61004255324042
7106031432666
oct20434536572
95655258688
102222112122
11a403627aa
12520220622
132954a4259
141711958a6
15d01388d2
hex8472bd7a

2222112122 has 4 divisors (see below), whose sum is σ = 3333168186. Its totient is φ = 1111056060.

The previous prime is 2222112119. The next prime is 2222112157. The reversal of 2222112122 is 2212112222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1882778881 + 339333241 = 43391^2 + 18421^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2222112122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555528029 + ... + 555528032.

Almost surely, 22222112122 is an apocalyptic number.

2222112122 is a deficient number, since it is larger than the sum of its proper divisors (1111056064).

2222112122 is a wasteful number, since it uses less digits than its factorization.

2222112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111056063.

The product of its digits is 128, while the sum is 17.

The square root of 2222112122 is about 47139.2842754321. The cubic root of 2222112122 is about 1304.9343286438.

Adding to 2222112122 its reverse (2212112222), we get a palindrome (4434224344).

It can be divided in two parts, 22221 and 12122, that added together give a palindrome (34343).

The spelling of 2222112122 in words is "two billion, two hundred twenty-two million, one hundred twelve thousand, one hundred twenty-two".

Divisors: 1 2 1111056061 2222112122