222123020321 has 2 divisors, whose sum is σ = 222123020322. Its totient is φ = 222123020320.

The previous prime is 222123020311. The next prime is 222123020341. The reversal of 222123020321 is 123020321222.

It is a happy number.

It is an a-pointer prime, because the next prime (222123020341) can be obtained adding 222123020321 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215399020321 + 6724000000 = 464111^2 + 82000^2 .

It is a cyclic number.

It is not a de Polignac number, because 222123020321 - 2²⁶ = 222055911457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222123020293 and 222123020302.

It is not a weakly prime, because it can be changed into another prime (222123020311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111061510160 + 111061510161.

It is an arithmetic number, because the mean of its divisors is an integer number (111061510161).

Almost surely, 2^222123020321 is an apocalyptic number.

It is an amenable number.

222123020321 is a deficient number, since it is larger than the sum of its proper divisors (1).

222123020321 is an equidigital number, since it uses as much as digits as its factorization.

222123020321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 222123020321 its reverse (123020321222), we get a palindrome (345143341543).

The spelling of 222123020321 in words is "two hundred twenty-two billion, one hundred twenty-three million, twenty thousand, three hundred twenty-one".