12400000212 has 96 divisors (see below), whose sum is σ = 31078010880. Its totient is φ = 3839172480.

The previous prime is 12400000187. The next prime is 12400000247. The reversal of 12400000212 is 21200000421.

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

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, 1325383 + ... + 1334705.

It is an arithmetic number, because the mean of its divisors is an integer number (323729280).

Almost surely, 2^12400000212 is an apocalyptic number.

12400000212 is a gapful number since it is divisible by the number (12) 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 12400000212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15539005440).

12400000212 is an abundant number, since it is smaller than the sum of its proper divisors (18678010668).

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

12400000212 is a wasteful number, since it uses less digits than its factorization.

12400000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9493 (or 9491 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12400000212 its reverse (21200000421), we get a palindrome (33600000633).

The spelling of 12400000212 in words is "twelve billion, four hundred million, two hundred twelve", and thus it is an aban number.