121110087 has 16 divisors (see below), whose sum is σ = 190502912. Its totient is φ = 66972960.

The previous prime is 121110079. The next prime is 121110089. The reversal of 121110087 is 780011121.

It is not a de Polignac number, because 121110087 - 2³ = 121110079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92368 + ... + 93669.

It is an arithmetic number, because the mean of its divisors is an integer number (11906432).

Almost surely, 2^121110087 is an apocalyptic number.

121110087 is a deficient number, since it is larger than the sum of its proper divisors (69392825).

121110087 is a wasteful number, since it uses less digits than its factorization.

121110087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186078.

The product of its (nonzero) digits is 112, while the sum is 21.

The square root of 121110087 is about 11005.0028169010. The cubic root of 121110087 is about 494.7586988376.

The spelling of 121110087 in words is "one hundred twenty-one million, one hundred ten thousand, eighty-seven".