12123552 has 48 divisors (see below), whose sum is σ = 36372672. Its totient is φ = 3463680.

The previous prime is 12123523. The next prime is 12123557. The reversal of 12123552 is 25532121.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (12123557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8349 + ... + 9692.

It is an arithmetic number, because the mean of its divisors is an integer number (757764).

Almost surely, 2^12123552 is an apocalyptic number.

12123552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12123552 is an abundant number, since it is smaller than the sum of its proper divisors (24249120).

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

12123552 is a wasteful number, since it uses less digits than its factorization.

12123552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18061 (or 18053 counting only the distinct ones).

The product of its digits is 600, while the sum is 21.

The square root of 12123552 is about 3481.8891424053. The cubic root of 12123552 is about 229.7258990547.

Adding to 12123552 its reverse (25532121), we get a palindrome (37655673).

The spelling of 12123552 in words is "twelve million, one hundred twenty-three thousand, five hundred fifty-two".