1323121277453 has 2 divisors, whose sum is σ = 1323121277454. Its totient is φ = 1323121277452.

The previous prime is 1323121277447. The next prime is 1323121277501. The reversal of 1323121277453 is 3547721213231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1296494217769 + 26627059684 = 1138637^2 + 163178^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323121277453 - 2¹⁴ = 1323121261069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1323121277453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323121277053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661560638726 + 661560638727.

It is an arithmetic number, because the mean of its divisors is an integer number (661560638727).

Almost surely, 2^{1323121277453} is an apocalyptic number.

It is an amenable number.

1323121277453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323121277453 is an equidigital number, since it uses as much as digits as its factorization.

1323121277453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 41.

The spelling of 1323121277453 in words is "one trillion, three hundred twenty-three billion, one hundred twenty-one million, two hundred seventy-seven thousand, four hundred fifty-three".