143421344221 has 8 divisors (see below), whose sum is σ = 144662952960. Its totient is φ = 142181490528.

The previous prime is 143421344201. The next prime is 143421344251. The reversal of 143421344221 is 122443124341.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143421344221 - 2²³ = 143412955613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143421344201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274351 + ... + 601756.

It is an arithmetic number, because the mean of its divisors is an integer number (18082869120).

Almost surely, 2^143421344221 is an apocalyptic number.

It is an amenable number.

143421344221 is a deficient number, since it is larger than the sum of its proper divisors (1241608739).

143421344221 is a wasteful number, since it uses less digits than its factorization.

143421344221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877523.

The product of its digits is 18432, while the sum is 31.

Adding to 143421344221 its reverse (122443124341), we get a palindrome (265864468562).

The spelling of 143421344221 in words is "one hundred forty-three billion, four hundred twenty-one million, three hundred forty-four thousand, two hundred twenty-one".