12099244420 has 24 divisors (see below), whose sum is σ = 26903026584. Its totient is φ = 4555009536.

The previous prime is 12099244393. The next prime is 12099244439. The reversal of 12099244420 is 2444299021.

It can be written as a sum of positive squares in 4 ways, for example, as 108118404 + 11991126016 = 10398^2 + 109504^2 .

It is a super-2 number, since 2×12099244420² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12099244420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17792667 + ... + 17793346.

It is an arithmetic number, because the mean of its divisors is an integer number (1120959441).

Almost surely, 2^12099244420 is an apocalyptic number.

12099244420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12099244420 is an abundant number, since it is smaller than the sum of its proper divisors (14803782164).

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

12099244420 is a wasteful number, since it uses less digits than its factorization.

12099244420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35586039 (or 35586037 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 12099244420 in words is "twelve billion, ninety-nine million, two hundred forty-four thousand, four hundred twenty".