121251326326 has 32 divisors (see below), whose sum is σ = 206696014560. Its totient is φ = 52883145216.

The previous prime is 121251326311. The next prime is 121251326327. The reversal of 121251326326 is 623623152121.

It is a junction number, because it is equal to n+sod(n) for n = 121251326291 and 121251326300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121251326327) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 113011 + ... + 505246.

It is an arithmetic number, because the mean of its divisors is an integer number (6459250455).

Almost surely, 2^121251326326 is an apocalyptic number.

121251326326 is a deficient number, since it is larger than the sum of its proper divisors (85444688234).

121251326326 is a wasteful number, since it uses less digits than its factorization.

121251326326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618688.

The product of its digits is 25920, while the sum is 34.

Adding to 121251326326 its reverse (623623152121), we get a palindrome (744874478447).

The spelling of 121251326326 in words is "one hundred twenty-one billion, two hundred fifty-one million, three hundred twenty-six thousand, three hundred twenty-six".