1213450514281 has 2 divisors, whose sum is σ = 1213450514282. Its totient is φ = 1213450514280.

The previous prime is 1213450514251. The next prime is 1213450514291. The reversal of 1213450514281 is 1824150543121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 708263629056 + 505186885225 = 841584^2 + 710765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213450514281 - 2¹³ = 1213450506089 is a prime.

It is a super-2 number, since 2×1213450514281² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1213450514281.

It is not a weakly prime, because it can be changed into another prime (1213450514251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606725257140 + 606725257141.

It is an arithmetic number, because the mean of its divisors is an integer number (606725257141).

Almost surely, 2^{1213450514281} is an apocalyptic number.

It is an amenable number.

1213450514281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213450514281 is an equidigital number, since it uses as much as digits as its factorization.

1213450514281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 37.

The spelling of 1213450514281 in words is "one trillion, two hundred thirteen billion, four hundred fifty million, five hundred fourteen thousand, two hundred eighty-one".