345222121222543 has 2 divisors, whose sum is σ = 345222121222544. Its totient is φ = 345222121222542.

The previous prime is 345222121222499. The next prime is 345222121222621.

It is a happy number.

345222121222543 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 345222121222543 - 2¹³ = 345222121214351 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 345222121222496 and 345222121222505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345222121232543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172611060611271 + 172611060611272.

It is an arithmetic number, because the mean of its divisors is an integer number (172611060611272).

Almost surely, 2^{345222121222543} is an apocalyptic number.

345222121222543 is a deficient number, since it is larger than the sum of its proper divisors (1).

345222121222543 is an equidigital number, since it uses as much as digits as its factorization.

345222121222543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460800, while the sum is 40.

The spelling of 345222121222543 in words is "three hundred forty-five trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, five hundred forty-three".