210123010203123 has 8 divisors (see below), whose sum is σ = 289824841659600. Its totient is φ = 135251592774368.

The previous prime is 210123010203049. The next prime is 210123010203137. The reversal of 210123010203123 is 321302010321012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210123010203123 - 2¹⁰ = 210123010202099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210123010203123.

It is not an unprimeable number, because it can be changed into a prime (210123010203143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1207603506828 + ... + 1207603507001.

It is an arithmetic number, because the mean of its divisors is an integer number (36228105207450).

Almost surely, 2^{210123010203123} is an apocalyptic number.

210123010203123 is a deficient number, since it is larger than the sum of its proper divisors (79701831456477).

210123010203123 is a wasteful number, since it uses less digits than its factorization.

210123010203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2415207013861.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 210123010203123 its reverse (321302010321012), we get a palindrome (531425020524135).

The spelling of 210123010203123 in words is "two hundred ten trillion, one hundred twenty-three billion, ten million, two hundred three thousand, one hundred twenty-three".