1212124341391 has 2 divisors, whose sum is σ = 1212124341392. Its totient is φ = 1212124341390.

The previous prime is 1212124341343. The next prime is 1212124341457. The reversal of 1212124341391 is 1931434212121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212124341391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212124041391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606062170695 + 606062170696.

It is an arithmetic number, because the mean of its divisors is an integer number (606062170696).

Almost surely, 2^{1212124341391} is an apocalyptic number.

1212124341391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212124341391 is an equidigital number, since it uses as much as digits as its factorization.

1212124341391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The spelling of 1212124341391 in words is "one trillion, two hundred twelve billion, one hundred twenty-four million, three hundred forty-one thousand, three hundred ninety-one".