344212011221 has 4 divisors (see below), whose sum is σ = 370689858252. Its totient is φ = 317734164192.

The previous prime is 344212011181. The next prime is 344212011223. The reversal of 344212011221 is 122110212443.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141094140625 + 203117870596 = 375625^2 + 450686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344212011221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344212011223) 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, 13238923496 + ... + 13238923521.

It is an arithmetic number, because the mean of its divisors is an integer number (92672464563).

Almost surely, 2^344212011221 is an apocalyptic number.

It is an amenable number.

344212011221 is a deficient number, since it is larger than the sum of its proper divisors (26477847031).

344212011221 is a wasteful number, since it uses less digits than its factorization.

344212011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26477847030.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 344212011221 its reverse (122110212443), we get a palindrome (466322223664).

The spelling of 344212011221 in words is "three hundred forty-four billion, two hundred twelve million, eleven thousand, two hundred twenty-one".