20221111321 has 2 divisors, whose sum is σ = 20221111322. Its totient is φ = 20221111320.

The previous prime is 20221111289. The next prime is 20221111349. The reversal of 20221111321 is 12311112202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17993271321 + 2227840000 = 134139^2 + 47200^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221111321 - 2⁵ = 20221111289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20221111295 and 20221111304.

It is not a weakly prime, because it can be changed into another prime (20221111021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110555660 + 10110555661.

It is an arithmetic number, because the mean of its divisors is an integer number (10110555661).

Almost surely, 2^20221111321 is an apocalyptic number.

It is an amenable number.

20221111321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221111321 is an equidigital number, since it uses as much as digits as its factorization.

20221111321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20221111321 its reverse (12311112202), we get a palindrome (32532223523).

The spelling of 20221111321 in words is "twenty billion, two hundred twenty-one million, one hundred eleven thousand, three hundred twenty-one".