121187103 has 16 divisors (see below), whose sum is σ = 169053696. Its totient is φ = 77140160.

The previous prime is 121187089. The next prime is 121187137. The reversal of 121187103 is 301781121.

It is a happy number.

It is not a de Polignac number, because 121187103 - 2⁵ = 121187071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121187503) 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, 4701 + ... + 16262.

It is an arithmetic number, because the mean of its divisors is an integer number (10565856).

Almost surely, 2^121187103 is an apocalyptic number.

121187103 is a deficient number, since it is larger than the sum of its proper divisors (47866593).

121187103 is a wasteful number, since it uses less digits than its factorization.

121187103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21054.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 121187103 is about 11008.5013966480. The cubic root of 121187103 is about 494.8635518208.

The spelling of 121187103 in words is "one hundred twenty-one million, one hundred eighty-seven thousand, one hundred three".