321220141021 has 32 divisors (see below), whose sum is σ = 381792821760. Its totient is φ = 267473581056.

The previous prime is 321220140979. The next prime is 321220141043. The reversal of 321220141021 is 120141022123.

It is a cyclic number.

It is not a de Polignac number, because 321220141021 - 2¹¹ = 321220138973 is a prime.

It is a super-2 number, since 2×321220141021² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321220141021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321220142021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254700 + ... + 841018.

It is an arithmetic number, because the mean of its divisors is an integer number (11931025680).

Almost surely, 2^321220141021 is an apocalyptic number.

It is an amenable number.

321220141021 is a deficient number, since it is larger than the sum of its proper divisors (60572680739).

321220141021 is a wasteful number, since it uses less digits than its factorization.

321220141021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586453.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 321220141021 its reverse (120141022123), we get a palindrome (441361163144).

It can be divided in two parts, 321220 and 141021, that added together give a triangular number (462241 = T₉₆₁).

The spelling of 321220141021 in words is "three hundred twenty-one billion, two hundred twenty million, one hundred forty-one thousand, twenty-one".