143221215124 has 72 divisors (see below), whose sum is σ = 277804439640. Its totient is φ = 64223967744.

The previous prime is 143221215079. The next prime is 143221215131. The reversal of 143221215124 is 421512122341.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 1499083524 + 141722131600 = 38718^2 + 376460^2 .

It is a junction number, because it is equal to n+sod(n) for n = 143221215092 and 143221215101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87489234 + ... + 87490870.

It is an arithmetic number, because the mean of its divisors is an integer number (3858394995).

Almost surely, 2^143221215124 is an apocalyptic number.

It is an amenable number.

143221215124 is a deficient number, since it is larger than the sum of its proper divisors (134583224516).

143221215124 is a wasteful number, since it uses less digits than its factorization.

143221215124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957 (or 2918 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

Adding to 143221215124 its reverse (421512122341), we get a palindrome (564733337465).

The spelling of 143221215124 in words is "one hundred forty-three billion, two hundred twenty-one million, two hundred fifteen thousand, one hundred twenty-four".