12000121224 has 128 divisors (see below), whose sum is σ = 37042064640. Its totient is φ = 3154701312.

The previous prime is 12000121141. The next prime is 12000121291. The reversal of 12000121224 is 42212100021.

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, 683662 + ... + 700994.

It is an arithmetic number, because the mean of its divisors is an integer number (289391130).

Almost surely, 2^12000121224 is an apocalyptic number.

12000121224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12000121224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18521032320).

12000121224 is an abundant number, since it is smaller than the sum of its proper divisors (25041943416).

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

12000121224 is a wasteful number, since it uses less digits than its factorization.

12000121224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17679 (or 17675 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12000121224 its reverse (42212100021), we get a palindrome (54212221245).

The spelling of 12000121224 in words is "twelve billion, one hundred twenty-one thousand, two hundred twenty-four".