12212100040 has 64 divisors (see below), whose sum is σ = 31420431360. Its totient is φ = 4184620800.

The previous prime is 12212100037. The next prime is 12212100049. The reversal of 12212100040 is 4000121221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12212100049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520809 + ... + 543751.

It is an arithmetic number, because the mean of its divisors is an integer number (490944240).

Almost surely, 2^12212100040 is an apocalyptic number.

12212100040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212100040 is an abundant number, since it is smaller than the sum of its proper divisors (19208331320).

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

12212100040 is a wasteful number, since it uses less digits than its factorization.

12212100040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24862 (or 24858 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12212100040 its reverse (4000121221), we get a palindrome (16212221261).

The spelling of 12212100040 in words is "twelve billion, two hundred twelve million, one hundred thousand, forty".