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12210115 = 512291987
BaseRepresentation
bin101110100100…
…111111000011
3211222100010111
4232210333003
511111210430
61113412151
7205533001
oct56447703
924870114
1012210115
11698a705
12410a057
1326b6828
14189ba71
151112c2a
hexba4fc3

12210115 has 8 divisors (see below), whose sum is σ = 14671440. Its totient is φ = 9755232.

The previous prime is 12210113. The next prime is 12210119. The reversal of 12210115 is 51101221.

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

It is a cyclic number.

It is not a de Polignac number, because 12210115 - 21 = 12210113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12210095 and 12210104.

It is not an unprimeable number, because it can be changed into a prime (12210113) 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, 5152 + ... + 7138.

It is an arithmetic number, because the mean of its divisors is an integer number (1833930).

Almost surely, 212210115 is an apocalyptic number.

12210115 is a deficient number, since it is larger than the sum of its proper divisors (2461325).

12210115 is a wasteful number, since it uses less digits than its factorization.

12210115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 12210115 is about 3494.2974973519. The cubic root of 12210115 is about 230.2713558448.

Adding to 12210115 its reverse (51101221), we get a palindrome (63311336).

The spelling of 12210115 in words is "twelve million, two hundred ten thousand, one hundred fifteen".

Divisors: 1 5 1229 1987 6145 9935 2442023 12210115