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222122 = 21747139
BaseRepresentation
bin110110001110101010
3102021200202
4312032222
524101442
64432202
71613405
oct661652
9367622
10222122
1114197a
12a8662
137a144
145ad3c
1545c32
hex363aa

222122 has 16 divisors (see below), whose sum is σ = 362880. Its totient is φ = 101568.

The previous prime is 222113. The next prime is 222127. The reversal of 222122 is 221222.

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

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (222127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529 + ... + 1667.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2222122 is an apocalyptic number.

222122 is a deficient number, since it is larger than the sum of its proper divisors (140758).

222122 is a wasteful number, since it uses less digits than its factorization.

222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205.

The product of its digits is 32, while the sum is 11.

The square root of 222122 is about 471.2982070834. The cubic root of 222122 is about 60.5615792653.

Subtracting from 222122 its sum of digits (11), we obtain a triangular number (222111 = T666).

Adding to 222122 its reverse (221222), we get a palindrome (443344).

Subtracting from 222122 its reverse (221222), we obtain a square (900 = 302).

It can be divided in two parts, 2 and 22122, that multiplied together give a palindrome (44244).

The spelling of 222122 in words is "two hundred twenty-two thousand, one hundred twenty-two", and thus it is an iban number.

Divisors: 1 2 17 34 47 94 139 278 799 1598 2363 4726 6533 13066 111061 222122