121121422444 has 12 divisors (see below), whose sum is σ = 231231806568. Its totient is φ = 55055192000.

The previous prime is 121121422397. The next prime is 121121422453. The reversal of 121121422444 is 444224121121.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1376379757 + ... + 1376379844.

It is an arithmetic number, because the mean of its divisors is an integer number (19269317214).

Almost surely, 2^121121422444 is an apocalyptic number.

It is an amenable number.

121121422444 is a deficient number, since it is larger than the sum of its proper divisors (110110384124).

121121422444 is a wasteful number, since it uses less digits than its factorization.

121121422444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752759616 (or 2752759614 counting only the distinct ones).

The product of its digits is 4096, while the sum is 28.

Adding to 121121422444 its reverse (444224121121), we get a palindrome (565345543565).

The spelling of 121121422444 in words is "one hundred twenty-one billion, one hundred twenty-one million, four hundred twenty-two thousand, four hundred forty-four".