121303103103 has 48 divisors (see below), whose sum is σ = 225026081280. Its totient is φ = 61202129472.

The previous prime is 121303103099. The next prime is 121303103107. The reversal of 121303103103 is 301301303121.

It is a happy number.

121303103103 is a `hidden beast` number, since 12 + 1 + 30 + 310 + 310 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (121303103099) and next prime (121303103107).

It is not a de Polignac number, because 121303103103 - 2² = 121303103099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121303103107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3200973 + ... + 3238646.

It is an arithmetic number, because the mean of its divisors is an integer number (4688043360).

Almost surely, 2^121303103103 is an apocalyptic number.

121303103103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121303103103 is a deficient number, since it is larger than the sum of its proper divisors (103722978177).

121303103103 is a wasteful number, since it uses less digits than its factorization.

121303103103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6439668 (or 6439665 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 121303103103 its reverse (301301303121), we get a palindrome (422604406224).

The spelling of 121303103103 in words is "one hundred twenty-one billion, three hundred three million, one hundred three thousand, one hundred three".