12231550 has 24 divisors (see below), whose sum is σ = 22873536. Its totient is φ = 4866240.

The previous prime is 12231547. The next prime is 12231563. The reversal of 12231550 is 5513221.

It is a super-2 number, since 2×12231550² = 299221630805000, which 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 11 ways as a sum of consecutive naturals, for example, 10602 + ... + 11698.

It is an arithmetic number, because the mean of its divisors is an integer number (953064).

Almost surely, 2^12231550 is an apocalyptic number.

12231550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12231550 is a deficient number, since it is larger than the sum of its proper divisors (10641986).

12231550 is a wasteful number, since it uses less digits than its factorization.

12231550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332 (or 1327 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 12231550 is about 3497.3632925391. The cubic root of 12231550 is about 230.4060250924.

Adding to 12231550 its reverse (5513221), we get a palindrome (17744771).

The spelling of 12231550 in words is "twelve million, two hundred thirty-one thousand, five hundred fifty".