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12280901 is a prime number
BaseRepresentation
bin101110110110…
…010001000101
3212002221020012
4232312101011
511120442101
61115120005
7206246243
oct56662105
925087205
1012280901
116a28906
124143005
13270cb09
1418b9793
151128bbb
hexbb6445

12280901 has 2 divisors, whose sum is σ = 12280902. Its totient is φ = 12280900.

The previous prime is 12280883. The next prime is 12280903. The reversal of 12280901 is 10908221.

12280901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10956100 + 1324801 = 3310^2 + 1151^2 .

It is a cyclic number.

It is not a de Polignac number, because 12280901 - 26 = 12280837 is a prime.

Together with 12280903, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12280903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6140450 + 6140451.

It is an arithmetic number, because the mean of its divisors is an integer number (6140451).

Almost surely, 212280901 is an apocalyptic number.

It is an amenable number.

12280901 is a deficient number, since it is larger than the sum of its proper divisors (1).

12280901 is an equidigital number, since it uses as much as digits as its factorization.

12280901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 12280901 is about 3504.4116481943. The cubic root of 12280901 is about 230.7154846259.

The spelling of 12280901 in words is "twelve million, two hundred eighty thousand, nine hundred one".