143221233444 has 12 divisors (see below), whose sum is σ = 334182878064. Its totient is φ = 47740411144.

The previous prime is 143221233443. The next prime is 143221233461. The reversal of 143221233444 is 444332122341.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×143221233444² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (143221233443) 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, 5967551382 + ... + 5967551405.

It is an arithmetic number, because the mean of its divisors is an integer number (27848573172).

Almost surely, 2^143221233444 is an apocalyptic number.

It is an amenable number.

143221233444 is an abundant number, since it is smaller than the sum of its proper divisors (190961644620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143221233444 is a wasteful number, since it uses less digits than its factorization.

143221233444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11935102794 (or 11935102792 counting only the distinct ones).

The product of its digits is 55296, while the sum is 33.

Adding to 143221233444 its reverse (444332122341), we get a palindrome (587553355785).

The spelling of 143221233444 in words is "one hundred forty-three billion, two hundred twenty-one million, two hundred thirty-three thousand, four hundred forty-four".