2123210320123 has 2 divisors, whose sum is σ = 2123210320124. Its totient is φ = 2123210320122.

The previous prime is 2123210320103. The next prime is 2123210320169. The reversal of 2123210320123 is 3210230123212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123210320123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2123210320094 and 2123210320103.

It is not a weakly prime, because it can be changed into another prime (2123210320103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061605160061 + 1061605160062.

It is an arithmetic number, because the mean of its divisors is an integer number (1061605160062).

Almost surely, 2^{2123210320123} is an apocalyptic number.

2123210320123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123210320123 is an equidigital number, since it uses as much as digits as its factorization.

2123210320123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2123210320123 its reverse (3210230123212), we get a palindrome (5333440443335).

The spelling of 2123210320123 in words is "two trillion, one hundred twenty-three billion, two hundred ten million, three hundred twenty thousand, one hundred twenty-three".