121323113103 has 32 divisors (see below), whose sum is σ = 169509150720. Its totient is φ = 77039756640.

The previous prime is 121323113101. The next prime is 121323113117. The reversal of 121323113103 is 301311323121.

It is a happy number.

It is not a de Polignac number, because 121323113103 - 2¹ = 121323113101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121323113103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121323113101) 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 31 ways as a sum of consecutive naturals, for example, 27958908 + ... + 27963246.

It is an arithmetic number, because the mean of its divisors is an integer number (5297160960).

Almost surely, 2^121323113103 is an apocalyptic number.

121323113103 is a deficient number, since it is larger than the sum of its proper divisors (48186037617).

121323113103 is a wasteful number, since it uses less digits than its factorization.

121323113103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5979.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 121323113103 its reverse (301311323121), we get a palindrome (422634436224).

The spelling of 121323113103 in words is "one hundred twenty-one billion, three hundred twenty-three million, one hundred thirteen thousand, one hundred three".