143221012 has 24 divisors (see below), whose sum is σ = 287814240. Its totient is φ = 61673760.

The previous prime is 143220997. The next prime is 143221021. The reversal of 143221012 is 210122341.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84823 + ... + 86494.

It is an arithmetic number, because the mean of its divisors is an integer number (11992260).

Almost surely, 2^143221012 is an apocalyptic number.

It is an amenable number.

143221012 is an abundant number, since it is smaller than the sum of its proper divisors (144593228).

143221012 is a wasteful number, since it uses less digits than its factorization.

143221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171351 (or 171349 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 143221012 is about 11967.4981512428. The cubic root of 143221012 is about 523.2014184218.

Adding to 143221012 its reverse (210122341), we get a palindrome (353343353).

The spelling of 143221012 in words is "one hundred forty-three million, two hundred twenty-one thousand, twelve".