2123221322993 has 2 divisors, whose sum is σ = 2123221322994. Its totient is φ = 2123221322992.

The previous prime is 2123221322969. The next prime is 2123221323061. The reversal of 2123221322993 is 3992231223212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1993032415504 + 130188907489 = 1411748^2 + 360817^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123221322993 - 2⁸ = 2123221322737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2123221322993.

It is not a weakly prime, because it can be changed into another prime (2123221322953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061610661496 + 1061610661497.

It is an arithmetic number, because the mean of its divisors is an integer number (1061610661497).

Almost surely, 2^{2123221322993} is an apocalyptic number.

It is an amenable number.

2123221322993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123221322993 is an equidigital number, since it uses as much as digits as its factorization.

2123221322993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 41.

The spelling of 2123221322993 in words is "two trillion, one hundred twenty-three billion, two hundred twenty-one million, three hundred twenty-two thousand, nine hundred ninety-three".