34534001221 has 2 divisors, whose sum is σ = 34534001222. Its totient is φ = 34534001220.

The previous prime is 34534001213. The next prime is 34534001267. The reversal of 34534001221 is 12210043543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26318572900 + 8215428321 = 162230^2 + 90639^2 .

It is a cyclic number.

It is not a de Polignac number, because 34534001221 - 2³ = 34534001213 is a prime.

It is a super-3 number, since 3×34534001221³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34534002221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17267000610 + 17267000611.

It is an arithmetic number, because the mean of its divisors is an integer number (17267000611).

Almost surely, 2^34534001221 is an apocalyptic number.

It is an amenable number.

34534001221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34534001221 is an equidigital number, since it uses as much as digits as its factorization.

34534001221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 34534001221 its reverse (12210043543), we get a palindrome (46744044764).

The spelling of 34534001221 in words is "thirty-four billion, five hundred thirty-four million, one thousand, two hundred twenty-one".