1323121000213 has 2 divisors, whose sum is σ = 1323121000214. Its totient is φ = 1323121000212.

The previous prime is 1323121000181. The next prime is 1323121000273. The reversal of 1323121000213 is 3120001213231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1299834850609 + 23286149604 = 1140103^2 + 152598^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323121000213 - 2⁵ = 1323121000181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323121000273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661560500106 + 661560500107.

It is an arithmetic number, because the mean of its divisors is an integer number (661560500107).

Almost surely, 2^{1323121000213} is an apocalyptic number.

It is an amenable number.

1323121000213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323121000213 is an equidigital number, since it uses as much as digits as its factorization.

1323121000213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1323121000213 its reverse (3120001213231), we get a palindrome (4443122213444).

The spelling of 1323121000213 in words is "one trillion, three hundred twenty-three billion, one hundred twenty-one million, two hundred thirteen", and thus it is an aban number.