12201552520 has 32 divisors (see below), whose sum is σ = 27458400600. Its totient is φ = 4879748608.

The previous prime is 12201552457. The next prime is 12201552527. The reversal of 12201552520 is 2525510221.

It can be written as a sum of positive squares in 4 ways, for example, as 11901500836 + 300051684 = 109094^2 + 17322^2 .

It is not an unprimeable number, because it can be changed into a prime (12201552527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229062 + ... + 277258.

Almost surely, 2^12201552520 is an apocalyptic number.

12201552520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201552520 is an abundant number, since it is smaller than the sum of its proper divisors (15256848080).

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

12201552520 is a wasteful number, since it uses less digits than its factorization.

12201552520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54537 (or 54533 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 12201552520 in words is "twelve billion, two hundred one million, five hundred fifty-two thousand, five hundred twenty".