2123021030321 has 2 divisors, whose sum is σ = 2123021030322. Its totient is φ = 2123021030320.

The previous prime is 2123021030309. The next prime is 2123021030329. The reversal of 2123021030321 is 1230301203212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1794892549696 + 328128480625 = 1339736^2 + 572825^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123021030321 - 2¹⁸ = 2123020768177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2123021030293 and 2123021030302.

It is not a weakly prime, because it can be changed into another prime (2123021030329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061510515160 + 1061510515161.

It is an arithmetic number, because the mean of its divisors is an integer number (1061510515161).

Almost surely, 2^{2123021030321} is an apocalyptic number.

It is an amenable number.

2123021030321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123021030321 is an equidigital number, since it uses as much as digits as its factorization.

2123021030321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2123021030321 its reverse (1230301203212), we get a palindrome (3353322233533).

The spelling of 2123021030321 in words is "two trillion, one hundred twenty-three billion, twenty-one million, thirty thousand, three hundred twenty-one".