34130221 has 2 divisors, whose sum is σ = 34130222. Its totient is φ = 34130220.

The previous prime is 34130219. The next prime is 34130233. The reversal of 34130221 is 12203143.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32832900 + 1297321 = 5730^2 + 1139^2 .

It is a cyclic number.

It is not a de Polignac number, because 34130221 - 2¹ = 34130219 is a prime.

Together with 34130219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 34130195 and 34130204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34110221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17065110 + 17065111.

It is an arithmetic number, because the mean of its divisors is an integer number (17065111).

Almost surely, 2^34130221 is an apocalyptic number.

It is an amenable number.

34130221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34130221 is an equidigital number, since it uses as much as digits as its factorization.

34130221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 34130221 is about 5842.1075820289. The cubic root of 34130221 is about 324.3742468392.

Adding to 34130221 its reverse (12203143), we get a palindrome (46333364).

The spelling of 34130221 in words is "thirty-four million, one hundred thirty thousand, two hundred twenty-one".