1212452551 has 2 divisors, whose sum is σ = 1212452552. Its totient is φ = 1212452550.

The previous prime is 1212452543. The next prime is 1212452557. The reversal of 1212452551 is 1552542121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212452551 - 2³ = 1212452543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212452557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606226275 + 606226276.

It is an arithmetic number, because the mean of its divisors is an integer number (606226276).

Almost surely, 2^1212452551 is an apocalyptic number.

1212452551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212452551 is an equidigital number, since it uses as much as digits as its factorization.

1212452551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000, while the sum is 28.

The square root of 1212452551 is about 34820.2893583612. The cubic root of 1212452551 is about 1066.3217078646.

Adding to 1212452551 its reverse (1552542121), we get a palindrome (2764994672).

The spelling of 1212452551 in words is "one billion, two hundred twelve million, four hundred fifty-two thousand, five hundred fifty-one".