1212230432461 has 2 divisors, whose sum is σ = 1212230432462. Its totient is φ = 1212230432460.

The previous prime is 1212230432453. The next prime is 1212230432519. The reversal of 1212230432461 is 1642340322121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 986458158436 + 225772274025 = 993206^2 + 475155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212230432461 - 2³ = 1212230432453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212230442461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606115216230 + 606115216231.

It is an arithmetic number, because the mean of its divisors is an integer number (606115216231).

Almost surely, 2^{1212230432461} is an apocalyptic number.

It is an amenable number.

1212230432461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212230432461 is an equidigital number, since it uses as much as digits as its factorization.

1212230432461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 1212230432461 its reverse (1642340322121), we get a palindrome (2854570754582).

The spelling of 1212230432461 in words is "one trillion, two hundred twelve billion, two hundred thirty million, four hundred thirty-two thousand, four hundred sixty-one".