103212121103 has 16 divisors (see below), whose sum is σ = 127058749440. Its totient is φ = 81644050656.

The previous prime is 103212121099. The next prime is 103212121123. The reversal of 103212121103 is 301121212301.

It is not a de Polignac number, because 103212121103 - 2² = 103212121099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103212121123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289058 + ... + 538496.

It is an arithmetic number, because the mean of its divisors is an integer number (7941171840).

Almost surely, 2^103212121103 is an apocalyptic number.

103212121103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

103212121103 is a deficient number, since it is larger than the sum of its proper divisors (23846628337).

103212121103 is a wasteful number, since it uses less digits than its factorization.

103212121103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254006.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 103212121103 its reverse (301121212301), we get a palindrome (404333333404).

The spelling of 103212121103 in words is "one hundred three billion, two hundred twelve million, one hundred twenty-one thousand, one hundred three".