445334211221 has 8 divisors (see below), whose sum is σ = 445612162200. Its totient is φ = 445056353280.

The previous prime is 445334211187. The next prime is 445334211233. The reversal of 445334211221 is 122112433544.

It can be written as a sum of positive squares in 4 ways, for example, as 72489639121 + 372844572100 = 269239^2 + 610610^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445334211221 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 (445334211251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11163491 + ... + 11203311.

It is an arithmetic number, because the mean of its divisors is an integer number (55701520275).

Almost surely, 2^445334211221 is an apocalyptic number.

It is an amenable number.

445334211221 is a deficient number, since it is larger than the sum of its proper divisors (277950979).

445334211221 is a wasteful number, since it uses less digits than its factorization.

445334211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46519.

The product of its digits is 23040, while the sum is 32.

Adding to 445334211221 its reverse (122112433544), we get a palindrome (567446644765).

The spelling of 445334211221 in words is "four hundred forty-five billion, three hundred thirty-four million, two hundred eleven thousand, two hundred twenty-one".