121220313310223 has 4 divisors (see below), whose sum is σ = 121220497862520. Its totient is φ = 121220128757928.

The previous prime is 121220313310163. The next prime is 121220313310279. The reversal of 121220313310223 is 322013313022121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121220313310223 - 2⁸ = 121220313309967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121220313310192 and 121220313310201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220313310123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91287365 + ... + 92605742.

It is an arithmetic number, because the mean of its divisors is an integer number (30305124465630).

Almost surely, 2^{121220313310223} is an apocalyptic number.

121220313310223 is a deficient number, since it is larger than the sum of its proper divisors (184552297).

121220313310223 is an equidigital number, since it uses as much as digits as its factorization.

121220313310223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184552296.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 121220313310223 its reverse (322013313022121), we get a palindrome (443233626332344).

The spelling of 121220313310223 in words is "one hundred twenty-one trillion, two hundred twenty billion, three hundred thirteen million, three hundred ten thousand, two hundred twenty-three".