1252312321229 has 2 divisors, whose sum is σ = 1252312321230. Its totient is φ = 1252312321228.

The previous prime is 1252312321207. The next prime is 1252312321277. The reversal of 1252312321229 is 9221232132521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1247749318729 + 4563002500 = 1117027^2 + 67550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252312321229 - 2¹⁶ = 1252312255693 is a prime.

It is a super-2 number, since 2×1252312321229² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252312321289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626156160614 + 626156160615.

It is an arithmetic number, because the mean of its divisors is an integer number (626156160615).

Almost surely, 2^{1252312321229} is an apocalyptic number.

It is an amenable number.

1252312321229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252312321229 is an equidigital number, since it uses as much as digits as its factorization.

1252312321229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The spelling of 1252312321229 in words is "one trillion, two hundred fifty-two billion, three hundred twelve million, three hundred twenty-one thousand, two hundred twenty-nine".