220021313001321 has 64 divisors (see below), whose sum is σ = 327580581629952. Its totient is φ = 130502034703872.

The previous prime is 220021313001253. The next prime is 220021313001337. The reversal of 220021313001321 is 123100313120022.

It is not a de Polignac number, because 220021313001321 - 2¹³ = 220021312993129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220021313001341) 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 63 ways as a sum of consecutive naturals, for example, 45309306 + ... + 49929708.

It is an arithmetic number, because the mean of its divisors is an integer number (5118446587968).

Almost surely, 2^{220021313001321} is an apocalyptic number.

It is an amenable number.

220021313001321 is a deficient number, since it is larger than the sum of its proper divisors (107559268628631).

220021313001321 is a wasteful number, since it uses less digits than its factorization.

220021313001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4620862.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 220021313001321 its reverse (123100313120022), we get a palindrome (343121626121343).

The spelling of 220021313001321 in words is "two hundred twenty trillion, twenty-one billion, three hundred thirteen million, one thousand, three hundred twenty-one".