121311311020323 has 16 divisors (see below), whose sum is σ = 161769267459072. Its totient is φ = 80863781544000.

The previous prime is 121311311020297. The next prime is 121311311020357. The reversal of 121311311020323 is 323020113113121.

It is not a de Polignac number, because 121311311020323 - 2³³ = 121302721085731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121311311020293 and 121311311020302.

It is not an unprimeable number, because it can be changed into a prime (121311311025323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1288839703 + ... + 1288933823.

It is an arithmetic number, because the mean of its divisors is an integer number (10110579216192).

Almost surely, 2^{121311311020323} is an apocalyptic number.

121311311020323 is a deficient number, since it is larger than the sum of its proper divisors (40457956438749).

121311311020323 is a wasteful number, since it uses less digits than its factorization.

121311311020323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144946.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 121311311020323 its reverse (323020113113121), we get a palindrome (444331424133444).

The spelling of 121311311020323 in words is "one hundred twenty-one trillion, three hundred eleven billion, three hundred eleven million, twenty thousand, three hundred twenty-three".