210123012030 has 32 divisors (see below), whose sum is σ = 504321323904. Its totient is φ = 56029903776.

The previous prime is 210123012023. The next prime is 210123012031. The reversal of 210123012030 is 30210321012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210123012031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443517 + ... + 785463.

It is an arithmetic number, because the mean of its divisors is an integer number (15760041372).

Almost surely, 2^210123012030 is an apocalyptic number.

210123012030 is an abundant number, since it is smaller than the sum of its proper divisors (294198311874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210123012030 is a wasteful number, since it uses less digits than its factorization.

210123012030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362440.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 210123012030 its reverse (30210321012), we get a palindrome (240333333042).

The spelling of 210123012030 in words is "two hundred ten billion, one hundred twenty-three million, twelve thousand, thirty".