34000287221 has 2 divisors, whose sum is σ = 34000287222. Its totient is φ = 34000287220.

The previous prime is 34000287193. The next prime is 34000287241. The reversal of 34000287221 is 12278200043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21075780625 + 12924506596 = 145175^2 + 113686^2 .

It is a cyclic number.

It is not a de Polignac number, because 34000287221 - 2⁶ = 34000287157 is a prime.

It is a super-2 number, since 2×34000287221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34000287241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17000143610 + 17000143611.

It is an arithmetic number, because the mean of its divisors is an integer number (17000143611).

Almost surely, 2^34000287221 is an apocalyptic number.

It is an amenable number.

34000287221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34000287221 is an equidigital number, since it uses as much as digits as its factorization.

34000287221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

Adding to 34000287221 its reverse (12278200043), we get a palindrome (46278487264).

The spelling of 34000287221 in words is "thirty-four billion, two hundred eighty-seven thousand, two hundred twenty-one".