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12212 = 224371
BaseRepresentation
bin10111110110100
3121202022
42332310
5342322
6132312
750414
oct27664
917668
1012212
1191a2
127098
135735
144644
153942
hex2fb4

12212 has 12 divisors (see below), whose sum is σ = 22176. Its totient is φ = 5880.

The previous prime is 12211. The next prime is 12227. The reversal of 12212 is 21221.

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 12212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137 + ... + 207.

It is an arithmetic number, because the mean of its divisors is an integer number (1848).

212212 is an apocalyptic number.

It is an amenable number.

12212 is a deficient number, since it is larger than the sum of its proper divisors (9964).

12212 is a wasteful number, since it uses less digits than its factorization.

12212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 116 counting only the distinct ones).

The product of its digits is 8, while the sum is 8.

The square root of 12212 is about 110.5079182683. The cubic root of 12212 is about 23.0283205014.

Adding to 12212 its reverse (21221), we get a palindrome (33433).

Subtracting 12212 from its reverse (21221), we obtain a palindrome (9009).

It can be divided in two parts, 1221 and 2, that multiplied together give a palindrome (2442).

The spelling of 12212 in words is "twelve thousand, two hundred twelve", and thus it is an iban number.

Divisors: 1 2 4 43 71 86 142 172 284 3053 6106 12212