20022013011221 has 8 divisors (see below), whose sum is σ = 21563088977304. Its totient is φ = 18481068633600.

The previous prime is 20022013011191. The next prime is 20022013011227. The reversal of 20022013011221 is 12211031022002.

It can be written as a sum of positive squares in 4 ways, for example, as 4632954904900 + 15389058106321 = 2152430^2 + 3922889^2 .

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-20022013011221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20022013011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022013011227) 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 7 ways as a sum of consecutive naturals, for example, 32580980 + ... + 33189821.

It is an arithmetic number, because the mean of its divisors is an integer number (2695386122163).

Almost surely, 2^{20022013011221} is an apocalyptic number.

It is an amenable number.

20022013011221 is a deficient number, since it is larger than the sum of its proper divisors (1541075966083).

20022013011221 is a wasteful number, since it uses less digits than its factorization.

20022013011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65794231.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20022013011221 its reverse (12211031022002), we get a palindrome (32233044033223).

The spelling of 20022013011221 in words is "twenty trillion, twenty-two billion, thirteen million, eleven thousand, two hundred twenty-one".