1212342553 has 2 divisors, whose sum is σ = 1212342554. Its totient is φ = 1212342552.

The previous prime is 1212342529. The next prime is 1212342577. The reversal of 1212342553 is 3552432121.

It is a balanced prime because it is at equal distance from previous prime (1212342529) and next prime (1212342577).

It can be written as a sum of positive squares in only one way, i.e., 608510224 + 603832329 = 24668^2 + 24573^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212342553 - 2²¹ = 1210245401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212342353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606171276 + 606171277.

It is an arithmetic number, because the mean of its divisors is an integer number (606171277).

Almost surely, 2^1212342553 is an apocalyptic number.

It is an amenable number.

1212342553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212342553 is an equidigital number, since it uses as much as digits as its factorization.

1212342553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 28.

The square root of 1212342553 is about 34818.7098123983. The cubic root of 1212342553 is about 1066.2894600590.

Adding to 1212342553 its reverse (3552432121), we get a palindrome (4764774674).

The spelling of 1212342553 in words is "one billion, two hundred twelve million, three hundred forty-two thousand, five hundred fifty-three".