121444424 has 16 divisors (see below), whose sum is σ = 227904300. Its totient is φ = 60669952.

The previous prime is 121444423. The next prime is 121444429. The reversal of 121444424 is 424444121.

It can be written as a sum of positive squares in 2 ways, for example, as 112741924 + 8702500 = 10618^2 + 2950^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 121444393 and 121444402.

It is not an unprimeable number, because it can be changed into a prime (121444423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4424 + ... + 16200.

Almost surely, 2^121444424 is an apocalyptic number.

It is an amenable number.

121444424 is a deficient number, since it is larger than the sum of its proper divisors (106459876).

121444424 is a wasteful number, since it uses less digits than its factorization.

121444424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13072 (or 13068 counting only the distinct ones).

The product of its digits is 4096, while the sum is 26.

The square root of 121444424 is about 11020.1825756201. The cubic root of 121444424 is about 495.2135581590.

Adding to 121444424 its reverse (424444121), we get a palindrome (545888545).

The spelling of 121444424 in words is "one hundred twenty-one million, four hundred forty-four thousand, four hundred twenty-four".