121204141422 has 256 divisors, whose sum is σ = 323841423360. Its totient is φ = 29346250752.

The previous prime is 121204141381. The next prime is 121204141439. The reversal of 121204141422 is 224141402121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121204141392 and 121204141401.

It is a congruent number.

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 127 ways as a sum of consecutive naturals, for example, 129352938 + ... + 129353874.

It is an arithmetic number, because the mean of its divisors is an integer number (1265005560).

Almost surely, 2^121204141422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121204141422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161920711680).

121204141422 is an abundant number, since it is smaller than the sum of its proper divisors (202637281938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121204141422 is a wasteful number, since it uses less digits than its factorization.

121204141422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 121204141422 its reverse (224141402121), we get a palindrome (345345543543).

The spelling of 121204141422 in words is "one hundred twenty-one billion, two hundred four million, one hundred forty-one thousand, four hundred twenty-two".