123222203021 has 2 divisors, whose sum is σ = 123222203022. Its totient is φ = 123222203020.

The previous prime is 123222202981. The next prime is 123222203063. The reversal of 123222203021 is 120302222321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114928458121 + 8293744900 = 339011^2 + 91070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123222203021 is a prime.

It is a super-2 number, since 2×123222203021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123222202984 and 123222203002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123222103021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61611101510 + 61611101511.

It is an arithmetic number, because the mean of its divisors is an integer number (61611101511).

Almost surely, 2^123222203021 is an apocalyptic number.

It is an amenable number.

123222203021 is a deficient number, since it is larger than the sum of its proper divisors (1).

123222203021 is an equidigital number, since it uses as much as digits as its factorization.

123222203021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 123222203021 its reverse (120302222321), we get a palindrome (243524425342).

The spelling of 123222203021 in words is "one hundred twenty-three billion, two hundred twenty-two million, two hundred three thousand, twenty-one".