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211212341 = 1967831999
BaseRepresentation
bin11001001011011…
…01100000110101
3112201102200212022
430211231200311
5413032243331
632543002525
75143163264
oct1445554065
9481380768
10211212341
11a9250a5a
125a899445
13349b1922
14200a05db
151382167b
hexc96d835

211212341 has 16 divisors (see below), whose sum is σ = 228480000. Its totient is φ = 194637168.

The previous prime is 211212319. The next prime is 211212343. The reversal of 211212341 is 143212112.

211212341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 211212341 - 218 = 210950197 is a prime.

It is a super-2 number, since 2×2112123412 = 89221305981400562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211212343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104660 + ... + 106658.

It is an arithmetic number, because the mean of its divisors is an integer number (14280000).

Almost surely, 2211212341 is an apocalyptic number.

It is an amenable number.

211212341 is a deficient number, since it is larger than the sum of its proper divisors (17267659).

211212341 is a wasteful number, since it uses less digits than its factorization.

211212341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168.

The product of its digits is 96, while the sum is 17.

The square root of 211212341 is about 14533.1462870226. The cubic root of 211212341 is about 595.5338202923.

Adding to 211212341 its reverse (143212112), we get a palindrome (354424453).

The spelling of 211212341 in words is "two hundred eleven million, two hundred twelve thousand, three hundred forty-one".

Divisors: 1 19 67 83 1273 1577 1999 5561 37981 105659 133933 165917 2544727 3152423 11116439 211212341