12103113220 has 24 divisors (see below), whose sum is σ = 27727132608. Its totient is φ = 4401132000.

The previous prime is 12103113181. The next prime is 12103113233. The reversal of 12103113220 is 2231130121.

It is a super-2 number, since 2×12103113220² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12103113194 and 12103113203.

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, 27506856 + ... + 27507295.

It is an arithmetic number, because the mean of its divisors is an integer number (1155297192).

Almost surely, 2^12103113220 is an apocalyptic number.

12103113220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103113220 is an abundant number, since it is smaller than the sum of its proper divisors (15624019388).

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

12103113220 is a wasteful number, since it uses less digits than its factorization.

12103113220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55014171 (or 55014169 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12103113220 its reverse (2231130121), we get a palindrome (14334243341).

The spelling of 12103113220 in words is "twelve billion, one hundred three million, one hundred thirteen thousand, two hundred twenty".