12103340420 has 24 divisors (see below), whose sum is σ = 25423227648. Its totient is φ = 4840152800.

The previous prime is 12103340401. The next prime is 12103340467. The reversal of 12103340420 is 2404330121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12103340392 and 12103340401.

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, 12365 + ... + 156075.

It is an arithmetic number, because the mean of its divisors is an integer number (1059301152).

Almost surely, 2^12103340420 is an apocalyptic number.

12103340420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103340420 is an abundant number, since it is smaller than the sum of its proper divisors (13319887228).

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

12103340420 is a wasteful number, since it uses less digits than its factorization.

12103340420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147931 (or 147929 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12103340420 its reverse (2404330121), we get a palindrome (14507670541).

The spelling of 12103340420 in words is "twelve billion, one hundred three million, three hundred forty thousand, four hundred twenty".