1301123212321 has 2 divisors, whose sum is σ = 1301123212322. Its totient is φ = 1301123212320.

The previous prime is 1301123212307. The next prime is 1301123212339. The reversal of 1301123212321 is 1232123211031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1104044040225 + 197079172096 = 1050735^2 + 443936^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301123212321 - 2²³ = 1301114823713 is a prime.

It is a super-2 number, since 2×1301123212321² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1301123212292 and 1301123212301.

It is not a weakly prime, because it can be changed into another prime (1301123218321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650561606160 + 650561606161.

It is an arithmetic number, because the mean of its divisors is an integer number (650561606161).

Almost surely, 2^{1301123212321} is an apocalyptic number.

It is an amenable number.

1301123212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301123212321 is an equidigital number, since it uses as much as digits as its factorization.

1301123212321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1301123212321 its reverse (1232123211031), we get a palindrome (2533246423352).

It can be divided in two parts, 130112 and 3212321, that added together give a palindrome (3342433).

The spelling of 1301123212321 in words is "one trillion, three hundred one billion, one hundred twenty-three million, two hundred twelve thousand, three hundred twenty-one".