34020143221 has 2 divisors, whose sum is σ = 34020143222. Its totient is φ = 34020143220.

The previous prime is 34020143219. The next prime is 34020143239. The reversal of 34020143221 is 12234102043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26409500100 + 7610643121 = 162510^2 + 87239^2 .

It is a cyclic number.

It is not a de Polignac number, because 34020143221 - 2¹ = 34020143219 is a prime.

Together with 34020143219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 34020143192 and 34020143201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34020147221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17010071610 + 17010071611.

It is an arithmetic number, because the mean of its divisors is an integer number (17010071611).

Almost surely, 2^34020143221 is an apocalyptic number.

It is an amenable number.

34020143221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34020143221 is an equidigital number, since it uses as much as digits as its factorization.

34020143221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 34020143221 its reverse (12234102043), we get a palindrome (46254245264).

It can be divided in two parts, 34020 and 143221, that added together give a square (177241 = 421²).

The spelling of 34020143221 in words is "thirty-four billion, twenty million, one hundred forty-three thousand, two hundred twenty-one".