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122222214 = 232171313049
BaseRepresentation
bin1110100100011…
…11011010000110
322111222112100200
413102033122012
5222242102324
620043351330
73012604662
oct722173206
9274875320
10122222214
1162a9a3a4
1234b22546
131c42454a
14123378a2
15aae3ec9
hex748f686

122222214 has 48 divisors (see below), whose sum is σ = 282625200. Its totient is φ = 38039040.

The previous prime is 122222209. The next prime is 122222239. The reversal of 122222214 is 412222221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38562 + ... + 41610.

It is an arithmetic number, because the mean of its divisors is an integer number (5888025).

Almost surely, 2122222214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122222214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141312600).

122222214 is an abundant number, since it is smaller than the sum of its proper divisors (160402986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122222214 is a wasteful number, since it uses less digits than its factorization.

122222214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205 (or 3202 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 122222214 is about 11055.4155959873. The cubic root of 122222214 is about 496.2685065228.

Adding to 122222214 its reverse (412222221), we get a palindrome (534444435).

It can be divided in two parts, 12222221 and 4, that multiplied together give a palindrome (48888884).

The spelling of 122222214 in words is "one hundred twenty-two million, two hundred twenty-two thousand, two hundred fourteen".

Divisors: 1 2 3 6 9 17 18 34 51 102 131 153 262 306 393 786 1179 2227 2358 3049 4454 6098 6681 9147 13362 18294 20043 27441 40086 51833 54882 103666 155499 310998 399419 466497 798838 932994 1198257 2396514 3594771 6790123 7189542 13580246 20370369 40740738 61111107 122222214