34331243221 has 16 divisors (see below), whose sum is σ = 37946188800. Its totient is φ = 30799033200.

The previous prime is 34331243213. The next prime is 34331243263. The reversal of 34331243221 is 12234213343.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 34331243221 - 2³ = 34331243213 is a prime.

It is a super-2 number, since 2×34331243221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34331243221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34331243281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1842570 + ... + 1861108.

It is an arithmetic number, because the mean of its divisors is an integer number (2371636800).

Almost surely, 2^34331243221 is an apocalyptic number.

It is an amenable number.

34331243221 is a deficient number, since it is larger than the sum of its proper divisors (3614945579).

34331243221 is a wasteful number, since it uses less digits than its factorization.

34331243221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20760.

The product of its digits is 10368, while the sum is 28.

Adding to 34331243221 its reverse (12234213343), we get a palindrome (46565456564).

The spelling of 34331243221 in words is "thirty-four billion, three hundred thirty-one million, two hundred forty-three thousand, two hundred twenty-one".