143221166213 has 16 divisors (see below), whose sum is σ = 144839923200. Its totient is φ = 141613809600.

The previous prime is 143221166203. The next prime is 143221166227. The reversal of 143221166213 is 312661122341.

It is a cyclic number.

It is not a de Polignac number, because 143221166213 - 2⁴ = 143221166197 is a prime.

It is a super-2 number, since 2×143221166213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143221166213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143221166203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25119263 + ... + 25124963.

It is an arithmetic number, because the mean of its divisors is an integer number (9052495200).

Almost surely, 2^143221166213 is an apocalyptic number.

It is an amenable number.

143221166213 is a deficient number, since it is larger than the sum of its proper divisors (1618756987).

143221166213 is a wasteful number, since it uses less digits than its factorization.

143221166213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6652.

The product of its digits is 10368, while the sum is 32.

Adding to 143221166213 its reverse (312661122341), we get a palindrome (455882288554).

The spelling of 143221166213 in words is "one hundred forty-three billion, two hundred twenty-one million, one hundred sixty-six thousand, two hundred thirteen".