12103571520 has 672 divisors, whose sum is σ = 46788019200. Its totient is φ = 2857586688.

The previous prime is 12103571503. The next prime is 12103571527. The reversal of 12103571520 is 2517530121.

It is a super-2 number, since 2×12103571520² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12103571527) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 74254959 + ... + 74255121.

Almost surely, 2^12103571520 is an apocalyptic number.

12103571520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12103571520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23394009600).

12103571520 is an abundant number, since it is smaller than the sum of its proper divisors (34684447680).

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

12103571520 is a wasteful number, since it uses less digits than its factorization.

12103571520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The spelling of 12103571520 in words is "twelve billion, one hundred three million, five hundred seventy-one thousand, five hundred twenty".