1323012011129 has 2 divisors, whose sum is σ = 1323012011130. Its totient is φ = 1323012011128.

The previous prime is 1323012011089. The next prime is 1323012011131. The reversal of 1323012011129 is 9211102103231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1114301916025 + 208710095104 = 1055605^2 + 456848^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323012011129 - 2²⁴ = 1322995233913 is a prime.

Together with 1323012011131, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1323012011098 and 1323012011107.

It is not a weakly prime, because it can be changed into another prime (1323012011179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661506005564 + 661506005565.

It is an arithmetic number, because the mean of its divisors is an integer number (661506005565).

Almost surely, 2^{1323012011129} is an apocalyptic number.

It is an amenable number.

1323012011129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323012011129 is an equidigital number, since it uses as much as digits as its factorization.

1323012011129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 1323012011129 in words is "one trillion, three hundred twenty-three billion, twelve million, eleven thousand, one hundred twenty-nine".