20022313221 has 24 divisors (see below), whose sum is σ = 30577453920. Its totient is φ = 12589939296.

The previous prime is 20022313217. The next prime is 20022313229. The reversal of 20022313221 is 12231322002.

It is not a de Polignac number, because 20022313221 - 2² = 20022313217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20022313194 and 20022313203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022313229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219090 + ... + 296723.

It is an arithmetic number, because the mean of its divisors is an integer number (1274060580).

Almost surely, 2^20022313221 is an apocalyptic number.

It is an amenable number.

20022313221 is a deficient number, since it is larger than the sum of its proper divisors (10555140699).

20022313221 is a wasteful number, since it uses less digits than its factorization.

20022313221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516065 (or 516062 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20022313221 its reverse (12231322002), we get a palindrome (32253635223).

It can be divided in two parts, 200223 and 13221, that added together give a square (213444 = 462²).

The spelling of 20022313221 in words is "twenty billion, twenty-two million, three hundred thirteen thousand, two hundred twenty-one".