123210000120 has 64 divisors (see below), whose sum is σ = 378226062720. Its totient is φ = 32091905664.

The previous prime is 123210000113. The next prime is 123210000127. The reversal of 123210000120 is 21000012321.

It is an interprime number because it is at equal distance from previous prime (123210000113) and next prime (123210000127).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 123210000096 and 123210000105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123210000127) 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, 11933794 + ... + 11944113.

It is an arithmetic number, because the mean of its divisors is an integer number (5909782230).

Almost surely, 2^123210000120 is an apocalyptic number.

123210000120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123210000120 is an abundant number, since it is smaller than the sum of its proper divisors (255016062600).

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

123210000120 is a wasteful number, since it uses less digits than its factorization.

123210000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23877964 (or 23877960 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 123210000120 its reverse (21000012321), we get a palindrome (144210012441).

The spelling of 123210000120 in words is "one hundred twenty-three billion, two hundred ten million, one hundred twenty", and thus it is an aban number.