210344120402123 has 2 divisors, whose sum is σ = 210344120402124. Its totient is φ = 210344120402122.

The previous prime is 210344120402077. The next prime is 210344120402147. The reversal of 210344120402123 is 321204021443012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210344120402123 - 2¹⁴ = 210344120385739 is a prime.

It is not a weakly prime, because it can be changed into another prime (210344120402023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105172060201061 + 105172060201062.

It is an arithmetic number, because the mean of its divisors is an integer number (105172060201062).

Almost surely, 2^{210344120402123} is an apocalyptic number.

210344120402123 is a deficient number, since it is larger than the sum of its proper divisors (1).

210344120402123 is an equidigital number, since it uses as much as digits as its factorization.

210344120402123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 210344120402123 its reverse (321204021443012), we get a palindrome (531548141845135).

The spelling of 210344120402123 in words is "two hundred ten trillion, three hundred forty-four billion, one hundred twenty million, four hundred two thousand, one hundred twenty-three".