121003213223 has 4 divisors (see below), whose sum is σ = 121003927248. Its totient is φ = 121002499200.

The previous prime is 121003213183. The next prime is 121003213267. The reversal of 121003213223 is 322312300121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 322312300121 = 7 ⋅46044614303.

It is a cyclic number.

It is not a de Polignac number, because 121003213223 - 2¹⁰ = 121003212199 is a prime.

It is a super-2 number, since 2×121003213223² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121003213195 and 121003213204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121003213283) 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 3 ways as a sum of consecutive naturals, for example, 57998 + ... + 495348.

It is an arithmetic number, because the mean of its divisors is an integer number (30250981812).

Almost surely, 2^121003213223 is an apocalyptic number.

121003213223 is a deficient number, since it is larger than the sum of its proper divisors (714025).

121003213223 is an equidigital number, since it uses as much as digits as its factorization.

121003213223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714024.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121003213223 its reverse (322312300121), we get a palindrome (443315513344).

The spelling of 121003213223 in words is "one hundred twenty-one billion, three million, two hundred thirteen thousand, two hundred twenty-three".