12123013110 has 64 divisors (see below), whose sum is σ = 31374641088. Its totient is φ = 2980191744.

The previous prime is 12123013093. The next prime is 12123013169. The reversal of 12123013110 is 1131032121.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12123013110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281364 + ... + 321576.

It is an arithmetic number, because the mean of its divisors is an integer number (490228767).

Almost surely, 2^12123013110 is an apocalyptic number.

12123013110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12123013110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15687320544).

12123013110 is an abundant number, since it is smaller than the sum of its proper divisors (19251627978).

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

12123013110 is a wasteful number, since it uses less digits than its factorization.

12123013110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41009.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12123013110 its reverse (1131032121), we get a palindrome (13254045231).

The spelling of 12123013110 in words is "twelve billion, one hundred twenty-three million, thirteen thousand, one hundred ten".