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12123302213 = 118893123931
BaseRepresentation
bin10110100101001101…
…01110100101000101
31011021220010120012002
423102212232211011
5144312031132323
65322552235045
7606266240261
oct132246564505
934256116162
1012123302213
115161319430
12242409ba85
1311b2876809
148301570a1
154ae4c9828
hex2d29ae945

12123302213 has 8 divisors (see below), whose sum is σ = 13227014496. Its totient is φ = 11019855600.

The previous prime is 12123302201. The next prime is 12123302237. The reversal of 12123302213 is 31220332121.

12123302213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12123302213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123302263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35858 + ... + 159788.

It is an arithmetic number, because the mean of its divisors is an integer number (1653376812).

Almost surely, 212123302213 is an apocalyptic number.

It is an amenable number.

12123302213 is a deficient number, since it is larger than the sum of its proper divisors (1103712283).

12123302213 is a wasteful number, since it uses less digits than its factorization.

12123302213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132835.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12123302213 its reverse (31220332121), we get a palindrome (43343634334).

The spelling of 12123302213 in words is "twelve billion, one hundred twenty-three million, three hundred two thousand, two hundred thirteen".

Divisors: 1 11 8893 97823 123931 1363241 1102118383 12123302213