12302111281 has 2 divisors, whose sum is σ = 12302111282. Its totient is φ = 12302111280.

The previous prime is 12302111249. The next prime is 12302111293. The reversal of 12302111281 is 18211120321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7624782400 + 4677328881 = 87320^2 + 68391^2 .

It is an emirp because it is prime and its reverse (18211120321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12302111281 - 2⁵ = 12302111249 is a prime.

It is a super-2 number, since 2×12302111281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12302118281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6151055640 + 6151055641.

It is an arithmetic number, because the mean of its divisors is an integer number (6151055641).

Almost surely, 2^12302111281 is an apocalyptic number.

It is an amenable number.

12302111281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12302111281 is an equidigital number, since it uses as much as digits as its factorization.

12302111281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 22.

The spelling of 12302111281 in words is "twelve billion, three hundred two million, one hundred eleven thousand, two hundred eighty-one".