1212322459 has 2 divisors, whose sum is σ = 1212322460. Its totient is φ = 1212322458.

The previous prime is 1212322451. The next prime is 1212322469. The reversal of 1212322459 is 9542232121.

It is a weak prime.

It is an emirp because it is prime and its reverse (9542232121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212322459 - 2³ = 1212322451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212322459.

It is not a weakly prime, because it can be changed into another prime (1212322451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606161229 + 606161230.

It is an arithmetic number, because the mean of its divisors is an integer number (606161230).

Almost surely, 2^1212322459 is an apocalyptic number.

1212322459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212322459 is an equidigital number, since it uses as much as digits as its factorization.

1212322459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 1212322459 is about 34818.4212594425. The cubic root of 1212322459 is about 1066.2835689466.

The spelling of 1212322459 in words is "one billion, two hundred twelve million, three hundred twenty-two thousand, four hundred fifty-nine".