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13102230221 = 47927353299
BaseRepresentation
bin11000011001111010…
…00010101011001101
31020211010011020221222
430030331002223031
5203313132331341
610004042133125
7642454055633
oct141475025315
936733136858
1013102230221
11561395a543
122657ab11a5
13130a616662
148c417b353
1551a3e744b
hex30cf42acd

13102230221 has 4 divisors (see below), whose sum is σ = 13129584000. Its totient is φ = 13074876444.

The previous prime is 13102230203. The next prime is 13102230263. The reversal of 13102230221 is 12203220131.

13102230221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12203220131 = 43283795817.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13102230221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13102230221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13102235221) 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 3 ways as a sum of consecutive naturals, for example, 13676171 + ... + 13677128.

It is an arithmetic number, because the mean of its divisors is an integer number (3282396000).

Almost surely, 213102230221 is an apocalyptic number.

It is an amenable number.

13102230221 is a deficient number, since it is larger than the sum of its proper divisors (27353779).

13102230221 is an equidigital number, since it uses as much as digits as its factorization.

13102230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27353778.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13102230221 its reverse (12203220131), we get a palindrome (25305450352).

The spelling of 13102230221 in words is "thirteen billion, one hundred two million, two hundred thirty thousand, two hundred twenty-one".

Divisors: 1 479 27353299 13102230221