1323221231029 has 2 divisors, whose sum is σ = 1323221231030. Its totient is φ = 1323221231028.

The previous prime is 1323221230993. The next prime is 1323221231099. The reversal of 1323221231029 is 9201321223231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1149580674225 + 173640556804 = 1072185^2 + 416702^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323221231029 - 2⁹ = 1323221230517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323221231099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661610615514 + 661610615515.

It is an arithmetic number, because the mean of its divisors is an integer number (661610615515).

Almost surely, 2^{1323221231029} is an apocalyptic number.

It is an amenable number.

1323221231029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323221231029 is an equidigital number, since it uses as much as digits as its factorization.

1323221231029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 1323221231029 in words is "one trillion, three hundred twenty-three billion, two hundred twenty-one million, two hundred thirty-one thousand, twenty-nine".