121320311444 has 24 divisors (see below), whose sum is σ = 213980961600. Its totient is φ = 60183478080.

The previous prime is 121320311401. The next prime is 121320311459. The reversal of 121320311444 is 444113023121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 767912 + ... + 912320.

It is an arithmetic number, because the mean of its divisors is an integer number (8915873400).

Almost surely, 2^121320311444 is an apocalyptic number.

It is an amenable number.

121320311444 is a deficient number, since it is larger than the sum of its proper divisors (92660650156).

121320311444 is a wasteful number, since it uses less digits than its factorization.

121320311444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146063 (or 146061 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 121320311444 its reverse (444113023121), we get a palindrome (565433334565).

The spelling of 121320311444 in words is "one hundred twenty-one billion, three hundred twenty million, three hundred eleven thousand, four hundred forty-four".