121211343321422 has 16 divisors (see below), whose sum is σ = 192492610943760. Its totient is φ = 57084015652992.

The previous prime is 121211343321377. The next prime is 121211343321443. The reversal of 121211343321422 is 224123343112121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9218988203 + ... + 9219001350.

It is an arithmetic number, because the mean of its divisors is an integer number (12030788183985).

Almost surely, 2^{121211343321422} is an apocalyptic number.

121211343321422 is a deficient number, since it is larger than the sum of its proper divisors (71281267622338).

121211343321422 is a wasteful number, since it uses less digits than its factorization.

121211343321422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18437989747.

The product of its digits is 13824, while the sum is 32.

Adding to 121211343321422 its reverse (224123343112121), we get a palindrome (345334686433543).

The spelling of 121211343321422 in words is "one hundred twenty-one trillion, two hundred eleven billion, three hundred forty-three million, three hundred twenty-one thousand, four hundred twenty-two".