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11122122212 = 225441511033
BaseRepresentation
bin10100101101110111…
…00001110111100100
31001201010020100102022
422112323201313210
5140234230402322
65035345402312
7542421323165
oct122673416744
931633210368
1011122122212
11479816a043
1221a4939398
131083315506
147771bd76c
15451663942
hex296ee1de4

11122122212 has 12 divisors (see below), whose sum is σ = 19467329196. Its totient is φ = 5560028160.

The previous prime is 11122122197. The next prime is 11122122217. The reversal of 11122122212 is 21222122111.

It can be written as a sum of positive squares in 2 ways, for example, as 4493557156 + 6628565056 = 67034^2 + 81416^2 .

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

It is not an unprimeable number, because it can be changed into a prime (11122122217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233753 + ... + 277280.

It is an arithmetic number, because the mean of its divisors is an integer number (1622277433).

Almost surely, 211122122212 is an apocalyptic number.

It is an amenable number.

11122122212 is a deficient number, since it is larger than the sum of its proper divisors (8345206984).

11122122212 is a wasteful number, since it uses less digits than its factorization.

11122122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516478 (or 516476 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

Adding to 11122122212 its reverse (21222122111), we get a palindrome (32344244323).

The spelling of 11122122212 in words is "eleven billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twelve".

Divisors: 1 2 4 5441 10882 21764 511033 1022066 2044132 2780530553 5561061106 11122122212