121321421326 has 48 divisors (see below), whose sum is σ = 214715370240. Its totient is φ = 51254789040.

The previous prime is 121321421311. The next prime is 121321421327. The reversal of 121321421326 is 623124123121.

121321421326 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121321421294 and 121321421303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321421327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4965921 + ... + 4990291.

It is an arithmetic number, because the mean of its divisors is an integer number (4473236880).

Almost surely, 2^121321421326 is an apocalyptic number.

121321421326 is a deficient number, since it is larger than the sum of its proper divisors (93393948914).

121321421326 is a wasteful number, since it uses less digits than its factorization.

121321421326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25109 (or 25102 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

Adding to 121321421326 its reverse (623124123121), we get a palindrome (744445544447).

The spelling of 121321421326 in words is "one hundred twenty-one billion, three hundred twenty-one million, four hundred twenty-one thousand, three hundred twenty-six".