12253533535220 has 24 divisors (see below), whose sum is σ = 25732609170408. Its totient is φ = 4901377462400.

The previous prime is 12253533535211. The next prime is 12253533535247. The reversal of 12253533535220 is 2253533535221.

It can be written as a sum of positive squares in 4 ways, for example, as 2280329525776 + 9973204009444 = 1510076^2 + 3158038^2 .

It is a super-2 number, since 2×12253533535220² (a number of 27 digits) contains 22 as substring.

It is a congruent 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, 638210 + ... + 4991430.

It is an arithmetic number, because the mean of its divisors is an integer number (1072192048767).

Almost surely, 2^{12253533535220} is an apocalyptic number.

12253533535220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12253533535220 is an abundant number, since it is smaller than the sum of its proper divisors (13479075635188).

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

12253533535220 is a wasteful number, since it uses less digits than its factorization.

12253533535220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493971 (or 4493969 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 41.

Subtracting from 12253533535220 its reverse (2253533535221), we obtain a palindrome (9999999999999).

The spelling of 12253533535220 in words is "twelve trillion, two hundred fifty-three billion, five hundred thirty-three million, five hundred thirty-five thousand, two hundred twenty".