121323221223 has 16 divisors (see below), whose sum is σ = 169999944576. Its totient is φ = 76865997600.

The previous prime is 121323221221. The next prime is 121323221233. The reversal of 121323221223 is 322122323121.

It is not a de Polignac number, because 121323221223 - 2¹ = 121323221221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121323221193 and 121323221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121323221221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12704553 + ... + 12714098.

It is an arithmetic number, because the mean of its divisors is an integer number (10624996536).

Almost surely, 2^121323221223 is an apocalyptic number.

121323221223 is a deficient number, since it is larger than the sum of its proper divisors (48676723353).

121323221223 is a wasteful number, since it uses less digits than its factorization.

121323221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25418734.

The product of its digits is 1728, while the sum is 24.

Adding to 121323221223 its reverse (322122323121), we get a palindrome (443445544344).

The spelling of 121323221223 in words is "one hundred twenty-one billion, three hundred twenty-three million, two hundred twenty-one thousand, two hundred twenty-three".