12520215024 has 80 divisors (see below), whose sum is σ = 33562804224. Its totient is φ = 4017542400.

The previous prime is 12520215023. The next prime is 12520215049. The reversal of 12520215024 is 42051202521.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 12520214985 and 12520215003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520215023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262182 + ... + 306234.

Almost surely, 2^12520215024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12520215024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16781402112).

12520215024 is an abundant number, since it is smaller than the sum of its proper divisors (21042589200).

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

12520215024 is a wasteful number, since it uses less digits than its factorization.

12520215024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44286 (or 44280 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 12520215024 its reverse (42051202521), we get a palindrome (54571417545).

The spelling of 12520215024 in words is "twelve billion, five hundred twenty million, two hundred fifteen thousand, twenty-four".