2123222321081 has 2 divisors, whose sum is σ = 2123222321082. Its totient is φ = 2123222321080.

The previous prime is 2123222321069. The next prime is 2123222321093. The reversal of 2123222321081 is 1801232223212.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2123222321069) and next prime (2123222321093).

It can be written as a sum of positive squares in only one way, i.e., 1497674202025 + 625548119056 = 1223795^2 + 790916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123222321081 is a prime.

It is a super-2 number, since 2×2123222321081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2123222321881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061611160540 + 1061611160541.

It is an arithmetic number, because the mean of its divisors is an integer number (1061611160541).

Almost surely, 2^{2123222321081} is an apocalyptic number.

It is an amenable number.

2123222321081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123222321081 is an equidigital number, since it uses as much as digits as its factorization.

2123222321081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 2123222321081 its reverse (1801232223212), we get a palindrome (3924454544293).

The spelling of 2123222321081 in words is "two trillion, one hundred twenty-three billion, two hundred twenty-two million, three hundred twenty-one thousand, eighty-one".