201030002123 has 4 divisors (see below), whose sum is σ = 201599492568. Its totient is φ = 200460511680.

The previous prime is 201030002111. The next prime is 201030002167. The reversal of 201030002123 is 321200030102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201030002123 - 2¹⁸ = 201029739979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201030002098 and 201030002107.

It is not an unprimeable number, because it can be changed into a prime (201035002123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284744693 + ... + 284745398.

It is an arithmetic number, because the mean of its divisors is an integer number (50399873142).

Almost surely, 2^201030002123 is an apocalyptic number.

201030002123 is a deficient number, since it is larger than the sum of its proper divisors (569490445).

201030002123 is an equidigital number, since it uses as much as digits as its factorization.

201030002123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569490444.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 201030002123 its reverse (321200030102), we get a palindrome (522230032225).

The spelling of 201030002123 in words is "two hundred one billion, thirty million, two thousand, one hundred twenty-three".