121320211221323 has 16 divisors (see below), whose sum is σ = 131445572075136. Its totient is φ = 111527009032320.

The previous prime is 121320211221283. The next prime is 121320211221343. The reversal of 121320211221323 is 323122112023121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121320211221323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121320211221292 and 121320211221301.

It is not an unprimeable number, because it can be changed into a prime (121320211221343) 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, 65789168 + ... + 67608098.

It is an arithmetic number, because the mean of its divisors is an integer number (8215348254696).

Almost surely, 2^{121320211221323} is an apocalyptic number.

121320211221323 is a deficient number, since it is larger than the sum of its proper divisors (10125360853813).

121320211221323 is a wasteful number, since it uses less digits than its factorization.

121320211221323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910234.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 121320211221323 its reverse (323122112023121), we get a palindrome (444442323244444).

The spelling of 121320211221323 in words is "one hundred twenty-one trillion, three hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, three hundred twenty-three".