121444444 has 12 divisors (see below), whose sum is σ = 231848568. Its totient is φ = 55202000.

The previous prime is 121444441. The next prime is 121444451. The reversal of 121444444 is 444444121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121444441) 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, 1380007 + ... + 1380094.

It is an arithmetic number, because the mean of its divisors is an integer number (19320714).

Almost surely, 2^121444444 is an apocalyptic number.

It is an amenable number.

121444444 is a deficient number, since it is larger than the sum of its proper divisors (110404124).

121444444 is a wasteful number, since it uses less digits than its factorization.

121444444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760116 (or 2760114 counting only the distinct ones).

The product of its digits is 8192, while the sum is 28.

The square root of 121444444 is about 11020.1834830460. The cubic root of 121444444 is about 495.2135853437.

Adding to 121444444 its reverse (444444121), we get a palindrome (565888565).

The spelling of 121444444 in words is "one hundred twenty-one million, four hundred forty-four thousand, four hundred forty-four".