143221101 has 4 divisors (see below), whose sum is σ = 190961472. Its totient is φ = 95480732.

The previous prime is 143221093. The next prime is 143221123. The reversal of 143221101 is 101122341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 143221101 - 2³ = 143221093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143221171) 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, 23870181 + ... + 23870186.

It is an arithmetic number, because the mean of its divisors is an integer number (47740368).

Almost surely, 2^143221101 is an apocalyptic number.

It is an amenable number.

143221101 is a deficient number, since it is larger than the sum of its proper divisors (47740371).

143221101 is an equidigital number, since it uses as much as digits as its factorization.

143221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47740370.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 143221101 is about 11967.5018696468. The cubic root of 143221101 is about 523.2015267972.

Adding to 143221101 its reverse (101122341), we get a palindrome (244343442).

The spelling of 143221101 in words is "one hundred forty-three million, two hundred twenty-one thousand, one hundred one".