1221042024343 has 2 divisors, whose sum is σ = 1221042024344. Its totient is φ = 1221042024342.

The previous prime is 1221042024331. The next prime is 1221042024347. The reversal of 1221042024343 is 3434202401221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221042024343 - 2⁵ = 1221042024311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221042024347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610521012171 + 610521012172.

It is an arithmetic number, because the mean of its divisors is an integer number (610521012172).

Almost surely, 2^{1221042024343} is an apocalyptic number.

1221042024343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221042024343 is an equidigital number, since it uses as much as digits as its factorization.

1221042024343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1221042024343 its reverse (3434202401221), we get a palindrome (4655244425564).

The spelling of 1221042024343 in words is "one trillion, two hundred twenty-one billion, forty-two million, twenty-four thousand, three hundred forty-three".