12520211235 has 48 divisors (see below), whose sum is σ = 23407727616. Its totient is φ = 5697784512.

The previous prime is 12520211233. The next prime is 12520211251. The reversal of 12520211235 is 53211202521.

It is not a de Polignac number, because 12520211235 - 2¹ = 12520211233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12520211233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125712 + ... + 202098.

It is an arithmetic number, because the mean of its divisors is an integer number (487660992).

Almost surely, 2^12520211235 is an apocalyptic number.

12520211235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12520211235 is a deficient number, since it is larger than the sum of its proper divisors (10887516381).

12520211235 is a wasteful number, since it uses less digits than its factorization.

12520211235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76632 (or 76625 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 12520211235 its reverse (53211202521), we get a palindrome (65731413756).

The spelling of 12520211235 in words is "twelve billion, five hundred twenty million, two hundred eleven thousand, two hundred thirty-five".