1212401131343 has 2 divisors, whose sum is σ = 1212401131344. Its totient is φ = 1212401131342.

The previous prime is 1212401131309. The next prime is 1212401131349. The reversal of 1212401131343 is 3431311042121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212401131343 - 2²⁰ = 1212400082767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212401131349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606200565671 + 606200565672.

It is an arithmetic number, because the mean of its divisors is an integer number (606200565672).

Almost surely, 2^{1212401131343} is an apocalyptic number.

1212401131343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212401131343 is an equidigital number, since it uses as much as digits as its factorization.

1212401131343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 1212401131343 its reverse (3431311042121), we get a palindrome (4643712173464).

The spelling of 1212401131343 in words is "one trillion, two hundred twelve billion, four hundred one million, one hundred thirty-one thousand, three hundred forty-three".