34007221 has 4 divisors (see below), whose sum is σ = 34020000. Its totient is φ = 33994444.

The previous prime is 34007219. The next prime is 34007231. The reversal of 34007221 is 12270043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12270043 = 79 ⋅155317.

It is a cyclic number.

It is not a de Polignac number, because 34007221 - 2¹ = 34007219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34007231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721 + ... + 8278.

It is an arithmetic number, because the mean of its divisors is an integer number (8505000).

Almost surely, 2^34007221 is an apocalyptic number.

It is an amenable number.

34007221 is a deficient number, since it is larger than the sum of its proper divisors (12779).

34007221 is an equidigital number, since it uses as much as digits as its factorization.

34007221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12778.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 34007221 is about 5831.5710576139. The cubic root of 34007221 is about 323.9841130502.

Adding to 34007221 its reverse (12270043), we get a palindrome (46277264).

The spelling of 34007221 in words is "thirty-four million, seven thousand, two hundred twenty-one".