121220313223 has 8 divisors (see below), whose sum is σ = 126503337600. Its totient is φ = 115938336888.

The previous prime is 121220313211. The next prime is 121220313233. The reversal of 121220313223 is 322313022121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121220313223 - 2⁵ = 121220313191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121220313194 and 121220313203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220313233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20913 + ... + 492826.

It is an arithmetic number, because the mean of its divisors is an integer number (15812917200).

Almost surely, 2^121220313223 is an apocalyptic number.

121220313223 is a deficient number, since it is larger than the sum of its proper divisors (5283024377).

121220313223 is a wasteful number, since it uses less digits than its factorization.

121220313223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524021.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 121220313223 its reverse (322313022121), we get a palindrome (443533335344).

The spelling of 121220313223 in words is "one hundred twenty-one billion, two hundred twenty million, three hundred thirteen thousand, two hundred twenty-three".