12521124222144 has 56 divisors (see below), whose sum is σ = 33129070536240. Its totient is φ = 4173674978304.

The previous prime is 12521124222127. The next prime is 12521124222161. The reversal of 12521124222144 is 44122242112521.

It is an interprime number because it is at equal distance from previous prime (12521124222127) and next prime (12521124222161).

It is a super-2 number, since 2×12521124222144² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41719722 + ... + 42018774.

It is an arithmetic number, because the mean of its divisors is an integer number (591590545290).

Almost surely, 2^{12521124222144} is an apocalyptic number.

It is an amenable number.

12521124222144 is an abundant number, since it is smaller than the sum of its proper divisors (20607946314096).

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

12521124222144 is a wasteful number, since it uses less digits than its factorization.

12521124222144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517137 (or 517127 counting only the distinct ones).

The product of its digits is 20480, while the sum is 33.

Adding to 12521124222144 its reverse (44122242112521), we get a palindrome (56643366334665).

The spelling of 12521124222144 in words is "twelve trillion, five hundred twenty-one billion, one hundred twenty-four million, two hundred twenty-two thousand, one hundred forty-four".