12251562243136 has 56 divisors (see below), whose sum is σ = 25434548649216. Its totient is φ = 5849214919680.

The previous prime is 12251562243131. The next prime is 12251562243157. The reversal of 12251562243136 is 63134226515221.

It is a super-2 number, since 2×12251562243136² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12251562243092 and 12251562243101.

It is not an unprimeable number, because it can be changed into a prime (12251562243131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49547316 + ... + 49793971.

It is an arithmetic number, because the mean of its divisors is an integer number (454188368736).

Almost surely, 2^{12251562243136} is an apocalyptic number.

12251562243136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12251562243136 is an abundant number, since it is smaller than the sum of its proper divisors (13182986406080).

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

12251562243136 is an equidigital number, since it uses as much as digits as its factorization.

12251562243136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99341387 (or 99341377 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

Adding to 12251562243136 its reverse (63134226515221), we get a palindrome (75385788758357).

The spelling of 12251562243136 in words is "twelve trillion, two hundred fifty-one billion, five hundred sixty-two million, two hundred forty-three thousand, one hundred thirty-six".