2120123433223 has 2 divisors, whose sum is σ = 2120123433224. Its totient is φ = 2120123433222.

The previous prime is 2120123433209. The next prime is 2120123433251. The reversal of 2120123433223 is 3223343210212.

It is an a-pointer prime, because the next prime (2120123433251) can be obtained adding 2120123433223 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120123433223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120123433191 and 2120123433200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120126433223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060061716611 + 1060061716612.

It is an arithmetic number, because the mean of its divisors is an integer number (1060061716612).

Almost surely, 2^{2120123433223} is an apocalyptic number.

2120123433223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120123433223 is an equidigital number, since it uses as much as digits as its factorization.

2120123433223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 2120123433223 its reverse (3223343210212), we get a palindrome (5343466643435).

The spelling of 2120123433223 in words is "two trillion, one hundred twenty billion, one hundred twenty-three million, four hundred thirty-three thousand, two hundred twenty-three".