12520101144 has 64 divisors (see below), whose sum is σ = 32193663840. Its totient is φ = 4054579200.

The previous prime is 12520101109. The next prime is 12520101151. The reversal of 12520101144 is 44110102521.

It is a self number, because there is not a number n which added to its sum of digits gives 12520101144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612432 + ... + 632544.

Almost surely, 2^12520101144 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 12520101144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16096831920).

12520101144 is an abundant number, since it is smaller than the sum of its proper divisors (19673562696).

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

12520101144 is a wasteful number, since it uses less digits than its factorization.

12520101144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20860 (or 20856 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 12520101144 its reverse (44110102521), we get a palindrome (56630203665).

The spelling of 12520101144 in words is "twelve billion, five hundred twenty million, one hundred one thousand, one hundred forty-four".