121412224 has 16 divisors (see below), whose sum is σ = 241876170. Its totient is φ = 60706048.

The previous prime is 121412219. The next prime is 121412227. The reversal of 121412224 is 422214121.

It can be written as a sum of positive squares in only one way, i.e., 104040000 + 17372224 = 10200^2 + 4168^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (121412227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474139 + ... + 474394.

Almost surely, 2^121412224 is an apocalyptic number.

It is an amenable number.

121412224 is a deficient number, since it is larger than the sum of its proper divisors (120463946).

121412224 is an frugal number, since it uses more digits than its factorization.

121412224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948547 (or 948535 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

The square root of 121412224 is about 11018.7215229354. The cubic root of 121412224 is about 495.1697870096.

Adding to 121412224 its reverse (422214121), we get a palindrome (543626345).

It can be divided in two parts, 12141 and 2224, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 121412224 in words is "one hundred twenty-one million, four hundred twelve thousand, two hundred twenty-four".