201224412520 has 32 divisors (see below), whose sum is σ = 453041805600. Its totient is φ = 80438764608.

The previous prime is 201224412497. The next prime is 201224412539. The reversal of 201224412520 is 25214422102.

It is a happy 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, 1529814 + ... + 1656133.

It is an arithmetic number, because the mean of its divisors is an integer number (14157556425).

Almost surely, 2^201224412520 is an apocalyptic number.

201224412520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201224412520 is an abundant number, since it is smaller than the sum of its proper divisors (251817393080).

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

201224412520 is a wasteful number, since it uses less digits than its factorization.

201224412520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187537 (or 3187533 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 201224412520 its reverse (25214422102), we get a palindrome (226438834622).

The spelling of 201224412520 in words is "two hundred one billion, two hundred twenty-four million, four hundred twelve thousand, five hundred twenty".