34002221 has 4 divisors (see below), whose sum is σ = 37093344. Its totient is φ = 30911100.

The previous prime is 34002187. The next prime is 34002251. The reversal of 34002221 is 12220043.

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: 12220043 = 11 ⋅1110913.

It is a de Polignac number, because none of the positive numbers 2^k-34002221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34002196 and 34002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34002251) 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, 1545545 + ... + 1545566.

It is an arithmetic number, because the mean of its divisors is an integer number (9273336).

Almost surely, 2^34002221 is an apocalyptic number.

It is an amenable number.

34002221 is a deficient number, since it is larger than the sum of its proper divisors (3091123).

34002221 is a wasteful number, since it uses less digits than its factorization.

34002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091122.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 34002221 is about 5831.1423409140. The cubic root of 34002221 is about 323.9682340700.

Adding to 34002221 its reverse (12220043), we get a palindrome (46222264).

It can be divided in two parts, 340022 and 21, that added together give a palindrome (340043).

The spelling of 34002221 in words is "thirty-four million, two thousand, two hundred twenty-one".