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2123102321 is a prime number
BaseRepresentation
bin111111010001011…
…1111100001110001
312110221222202212022
41332202333201301
513322003233241
6550401241225
7103420033454
oct17642774161
95427882768
102123102321
1199a48821a
124b3033215
1327ab19382
14161d8149b
15c65cc54b
hex7e8bf871

2123102321 has 2 divisors, whose sum is σ = 2123102322. Its totient is φ = 2123102320.

The previous prime is 2123102309. The next prime is 2123102347. The reversal of 2123102321 is 1232013212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1533583921 + 589518400 = 39161^2 + 24280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2123102321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2123102321.

It is not a weakly prime, because it can be changed into another prime (2123102381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061551160 + 1061551161.

It is an arithmetic number, because the mean of its divisors is an integer number (1061551161).

Almost surely, 22123102321 is an apocalyptic number.

It is an amenable number.

2123102321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123102321 is an equidigital number, since it uses as much as digits as its factorization.

2123102321 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2123102321 is about 46077.1344703639. The cubic root of 2123102321 is about 1285.2579780511.

Adding to 2123102321 its reverse (1232013212), we get a palindrome (3355115533).

The spelling of 2123102321 in words is "two billion, one hundred twenty-three million, one hundred two thousand, three hundred twenty-one".