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BaseRepresentation
bin101010010111…
…0101000110010
31112210102221011
41110232220302
521141223442
62112021134
7356535313
oct124565062
945712834
1022211122
11115a05aa
1275317aa
1347a899b
142d4260a
151e3b117
hex152ea32

22211122 has 8 divisors (see below), whose sum is σ = 33403500. Its totient is φ = 11076624.

The previous prime is 22211099. The next prime is 22211131. The reversal of 22211122 is 22111222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20169081 + 2042041 = 4491^2 + 1429^2 .

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

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

It is a zygodrome in base 10.

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, 13497 + ... + 15052.

Almost surely, 222211122 is an apocalyptic number.

22211122 is a deficient number, since it is larger than the sum of its proper divisors (11192378).

22211122 is a wasteful number, since it uses less digits than its factorization.

22211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28940.

The product of its digits is 32, while the sum is 13.

The square root of 22211122 is about 4712.8677044874. The cubic root of 22211122 is about 281.0974025208.

Adding to 22211122 its reverse (22111222), we get a palindrome (44322344).

It can be divided in two parts, 2 and 2211122, that multiplied together give a palindrome (4422244).

The spelling of 22211122 in words is "twenty-two million, two hundred eleven thousand, one hundred twenty-two".

Divisors: 1 2 389 778 28549 57098 11105561 22211122