34223145221 has 4 divisors (see below), whose sum is σ = 34372591500. Its totient is φ = 34073698944.

The previous prime is 34223145217. The next prime is 34223145239. The reversal of 34223145221 is 12254132243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12254132243 = 787 ⋅15570689.

It can be written as a sum of positive squares in 2 ways, for example, as 33347872996 + 875272225 = 182614^2 + 29585^2 .

It is a cyclic number.

It is not a de Polignac number, because 34223145221 - 2² = 34223145217 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 (34223145241) 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, 74722796 + ... + 74723253.

It is an arithmetic number, because the mean of its divisors is an integer number (8593147875).

Almost surely, 2^34223145221 is an apocalyptic number.

It is an amenable number.

34223145221 is a deficient number, since it is larger than the sum of its proper divisors (149446279).

34223145221 is a wasteful number, since it uses less digits than its factorization.

34223145221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149446278.

The product of its digits is 11520, while the sum is 29.

Adding to 34223145221 its reverse (12254132243), we get a palindrome (46477277464).

The spelling of 34223145221 in words is "thirty-four billion, two hundred twenty-three million, one hundred forty-five thousand, two hundred twenty-one".