121123213103 has 8 divisors (see below), whose sum is σ = 121573155360. Its totient is φ = 120673405440.

The previous prime is 121123213063. The next prime is 121123213153. The reversal of 121123213103 is 301312321121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121123213103 - 2²⁸ = 120854777647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123213153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1995263 + ... + 2055071.

It is an arithmetic number, because the mean of its divisors is an integer number (15196644420).

Almost surely, 2^121123213103 is an apocalyptic number.

121123213103 is a deficient number, since it is larger than the sum of its proper divisors (449942257).

121123213103 is an equidigital number, since it uses as much as digits as its factorization.

121123213103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67297.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 121123213103 its reverse (301312321121), we get a palindrome (422435534224).

The spelling of 121123213103 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred thirteen thousand, one hundred three".