121220110212103 has 96 divisors (see below), whose sum is σ = 157895551800000. Its totient is φ = 92213918318592.

The previous prime is 121220110212079. The next prime is 121220110212169. The reversal of 121220110212103 is 301212011022121.

It is not a de Polignac number, because 121220110212103 - 2¹³ = 121220110203911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220110210103) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3142922203 + ... + 3142960771.

It is an arithmetic number, because the mean of its divisors is an integer number (1644745331250).

Almost surely, 2^{121220110212103} is an apocalyptic number.

121220110212103 is a deficient number, since it is larger than the sum of its proper divisors (36675441587897).

121220110212103 is a wasteful number, since it uses less digits than its factorization.

121220110212103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39537 (or 39530 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 121220110212103 its reverse (301212011022121), we get a palindrome (422432121234224).

The spelling of 121220110212103 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred ten million, two hundred twelve thousand, one hundred three".