34221021 has 4 divisors (see below), whose sum is σ = 45628032. Its totient is φ = 22814012.

The previous prime is 34221007. The next prime is 34221037. The reversal of 34221021 is 12012243.

34221021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an emirpimes, since its reverse is a distinct semiprime: 12012243 = 3 ⋅4004081.

It is a cyclic number.

It is not a de Polignac number, because 34221021 - 2¹⁷ = 34089949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34221001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5703501 + ... + 5703506.

It is an arithmetic number, because the mean of its divisors is an integer number (11407008).

Almost surely, 2^34221021 is an apocalyptic number.

It is an amenable number.

34221021 is a deficient number, since it is larger than the sum of its proper divisors (11407011).

34221021 is a wasteful number, since it uses less digits than its factorization.

34221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11407010.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 34221021 is about 5849.8735883778. The cubic root of 34221021 is about 324.6616470788.

Adding to 34221021 its reverse (12012243), we get a palindrome (46233264).

The spelling of 34221021 in words is "thirty-four million, two hundred twenty-one thousand, twenty-one".