143221130 has 32 divisors (see below), whose sum is σ = 278211024. Its totient is φ = 52770816.

The previous prime is 143221123. The next prime is 143221153. The reversal of 143221130 is 31122341.

It can be written as a sum of positive squares in 8 ways, for example, as 2253001 + 140968129 = 1501^2 + 11873^2 .

It is a junction number, because it is equal to n+sod(n) for n = 143221099 and 143221108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86672 + ... + 88308.

Almost surely, 2^143221130 is an apocalyptic number.

143221130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

143221130 is a deficient number, since it is larger than the sum of its proper divisors (134989894).

143221130 is a wasteful number, since it uses less digits than its factorization.

143221130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 143221130 is about 11967.5030812614. The cubic root of 143221130 is about 523.2015621105.

Adding to 143221130 its reverse (31122341), we get a palindrome (174343471).

The spelling of 143221130 in words is "one hundred forty-three million, two hundred twenty-one thousand, one hundred thirty".