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12102122161 is a prime number
BaseRepresentation
bin10110100010101011…
…11011101010110001
31011020102021111121201
423101111323222301
5144241120402121
65320514251201
7605621224663
oct132125735261
934212244551
1012102122161
115150372558
122418b86b01
1311ab36c23c
1482b402533
154ac6e3e91
hex2d157bab1

12102122161 has 2 divisors, whose sum is σ = 12102122162. Its totient is φ = 12102122160.

The previous prime is 12102121963. The next prime is 12102122173. The reversal of 12102122161 is 16122120121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11724558400 + 377563761 = 108280^2 + 19431^2 .

It is a cyclic number.

It is not a de Polignac number, because 12102122161 - 211 = 12102120113 is a prime.

It is a super-2 number, since 2×121021221612 (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12102122191) 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, 6051061080 + 6051061081.

It is an arithmetic number, because the mean of its divisors is an integer number (6051061081).

Almost surely, 212102122161 is an apocalyptic number.

It is an amenable number.

12102122161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102122161 is an equidigital number, since it uses as much as digits as its factorization.

12102122161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12102122161 its reverse (16122120121), we get a palindrome (28224242282).

The spelling of 12102122161 in words is "twelve billion, one hundred two million, one hundred twenty-two thousand, one hundred sixty-one".