1212483340421 has 2 divisors, whose sum is σ = 1212483340422. Its totient is φ = 1212483340420.

The previous prime is 1212483340399. The next prime is 1212483340423. The reversal of 1212483340421 is 1240433842121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1212079893025 + 403447396 = 1100945^2 + 20086^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212483340421 - 2³⁸ = 937605433477 is a prime.

Together with 1212483340423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212483340423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606241670210 + 606241670211.

It is an arithmetic number, because the mean of its divisors is an integer number (606241670211).

Almost surely, 2^{1212483340421} is an apocalyptic number.

It is an amenable number.

1212483340421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212483340421 is an equidigital number, since it uses as much as digits as its factorization.

1212483340421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 35.

The spelling of 1212483340421 in words is "one trillion, two hundred twelve billion, four hundred eighty-three million, three hundred forty thousand, four hundred twenty-one".