12113061820 has 24 divisors (see below), whose sum is σ = 25599458304. Its totient is φ = 4814362176.

The previous prime is 12113061809. The next prime is 12113061839. The reversal of 12113061820 is 2816031121.

It is a congruent number.

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, 1925692 + ... + 1931971.

It is an arithmetic number, because the mean of its divisors is an integer number (1066644096).

Almost surely, 2^12113061820 is an apocalyptic number.

12113061820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12113061820 is an abundant number, since it is smaller than the sum of its proper divisors (13486396484).

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

12113061820 is a wasteful number, since it uses less digits than its factorization.

12113061820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857829 (or 3857827 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

Adding to 12113061820 its reverse (2816031121), we get a palindrome (14929092941).

The spelling of 12113061820 in words is "twelve billion, one hundred thirteen million, sixty-one thousand, eight hundred twenty".