121112103 has 16 divisors (see below), whose sum is σ = 185050880. Its totient is φ = 69019776.

The previous prime is 121112093. The next prime is 121112107. The reversal of 121112103 is 301211121.

It is not a de Polignac number, because 121112103 - 2⁴ = 121112087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112107) 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, 351 + ... + 15567.

It is an arithmetic number, because the mean of its divisors is an integer number (11565680).

Almost surely, 2^121112103 is an apocalyptic number.

121112103 is a deficient number, since it is larger than the sum of its proper divisors (63938777).

121112103 is a wasteful number, since it uses less digits than its factorization.

121112103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15606.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 121112103 is about 11005.0944112261. The cubic root of 121112103 is about 494.7614440755.

Adding to 121112103 its reverse (301211121), we get a palindrome (422323224).

The spelling of 121112103 in words is "one hundred twenty-one million, one hundred twelve thousand, one hundred three".