Search a number
-
+
12121250725301 is a prime number
BaseRepresentation
bin1011000001100011001011…
…0101111111110110110101
31120220210001210201010212012
42300120302311333312311
53042043310141202201
641440231541534005
72360505615121244
oct260306265776665
946823053633765
1012121250725301
1139536590413a3
12143921a414305
1369c04ba4b9a3
142dc95909a95b
1516047cad15bb
hexb0632d7fdb5

12121250725301 has 2 divisors, whose sum is σ = 12121250725302. Its totient is φ = 12121250725300.

The previous prime is 12121250725237. The next prime is 12121250725327. The reversal of 12121250725301 is 10352705212121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12117702140401 + 3548584900 = 3481049^2 + 59570^2 .

It is an emirp because it is prime and its reverse (10352705212121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12121250725301 - 26 = 12121250725237 is a prime.

It is a super-2 number, since 2×121212507253012 (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121250725351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060625362650 + 6060625362651.

It is an arithmetic number, because the mean of its divisors is an integer number (6060625362651).

Almost surely, 212121250725301 is an apocalyptic number.

It is an amenable number.

12121250725301 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121250725301 is an equidigital number, since it uses as much as digits as its factorization.

12121250725301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

Adding to 12121250725301 its reverse (10352705212121), we get a palindrome (22473955937422).

The spelling of 12121250725301 in words is "twelve trillion, one hundred twenty-one billion, two hundred fifty million, seven hundred twenty-five thousand, three hundred one".