321220141 has 8 divisors (see below), whose sum is σ = 350626464. Its totient is φ = 291847920.

The previous prime is 321220103. The next prime is 321220147. The reversal of 321220141 is 141022123.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321220141 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 (321220147) 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, 13710 + ... + 28816.

It is an arithmetic number, because the mean of its divisors is an integer number (43828308).

Almost surely, 2^321220141 is an apocalyptic number.

It is an amenable number.

321220141 is a deficient number, since it is larger than the sum of its proper divisors (29406323).

321220141 is a wasteful number, since it uses less digits than its factorization.

321220141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17051.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 321220141 is about 17922.6153504448. The cubic root of 321220141 is about 684.8586143276.

Adding to 321220141 its reverse (141022123), we get a palindrome (462242264).

The spelling of 321220141 in words is "three hundred twenty-one million, two hundred twenty thousand, one hundred forty-one".