342433421221 has 2 divisors, whose sum is σ = 342433421222. Its totient is φ = 342433421220.

The previous prime is 342433421207. The next prime is 342433421263. The reversal of 342433421221 is 122124334243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177687540900 + 164745880321 = 421530^2 + 405889^2 .

It is a cyclic number.

It is not a de Polignac number, because 342433421221 - 2¹⁹ = 342432896933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342433421821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171216710610 + 171216710611.

It is an arithmetic number, because the mean of its divisors is an integer number (171216710611).

Almost surely, 2^342433421221 is an apocalyptic number.

It is an amenable number.

342433421221 is a deficient number, since it is larger than the sum of its proper divisors (1).

342433421221 is an equidigital number, since it uses as much as digits as its factorization.

342433421221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 31.

Adding to 342433421221 its reverse (122124334243), we get a palindrome (464557755464).

The spelling of 342433421221 in words is "three hundred forty-two billion, four hundred thirty-three million, four hundred twenty-one thousand, two hundred twenty-one".