121303013103 has 40 divisors (see below), whose sum is σ = 194493343968. Its totient is φ = 75069006336.

The previous prime is 121303013101. The next prime is 121303013123. The reversal of 121303013103 is 301310303121.

It is a happy number.

121303013103 is a `hidden beast` number, since 1 + 21 + 30 + 301 + 310 + 3 = 666.

It is not a de Polignac number, because 121303013103 - 2¹ = 121303013101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121303013101) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 502851 + ... + 703892.

Almost surely, 2^121303013103 is an apocalyptic number.

121303013103 is a deficient number, since it is larger than the sum of its proper divisors (73190330865).

121303013103 is a wasteful number, since it uses less digits than its factorization.

121303013103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206845 (or 1206836 counting only the distinct ones).

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

Adding to 121303013103 its reverse (301310303121), we get a palindrome (422613316224).

The spelling of 121303013103 in words is "one hundred twenty-one billion, three hundred three million, thirteen thousand, one hundred three".