321232213444 has 12 divisors (see below), whose sum is σ = 562191461244. Its totient is φ = 160606081664.

The previous prime is 321232213429. The next prime is 321232213447. The reversal of 321232213444 is 444312232123.

It can be written as a sum of positive squares in 2 ways, for example, as 61603240000 + 259628973444 = 248200^2 + 509538^2 .

It is a super-2 number, since 2×321232213444² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321232213447) 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, 2433937 + ... + 2562520.

It is an arithmetic number, because the mean of its divisors is an integer number (46849288437).

Almost surely, 2^321232213444 is an apocalyptic number.

It is an amenable number.

321232213444 is a deficient number, since it is larger than the sum of its proper divisors (240959247800).

321232213444 is a wasteful number, since it uses less digits than its factorization.

321232213444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012534 (or 5012532 counting only the distinct ones).

The product of its digits is 27648, while the sum is 31.

Adding to 321232213444 its reverse (444312232123), we get a palindrome (765544445567).

The spelling of 321232213444 in words is "three hundred twenty-one billion, two hundred thirty-two million, two hundred thirteen thousand, four hundred forty-four".