121166087 has 8 divisors (see below), whose sum is σ = 138763776. Its totient is φ = 103640472.

The previous prime is 121166081. The next prime is 121166107. The reversal of 121166087 is 780661121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121166087 - 2¹⁴ = 121149703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121166081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14363 + ... + 21180.

It is an arithmetic number, because the mean of its divisors is an integer number (17345472).

Almost surely, 2^121166087 is an apocalyptic number.

121166087 is a deficient number, since it is larger than the sum of its proper divisors (17597689).

121166087 is an equidigital number, since it uses as much as digits as its factorization.

121166087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36037.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 121166087 is about 11007.5468202502. The cubic root of 121166087 is about 494.8349441186.

The spelling of 121166087 in words is "one hundred twenty-one million, one hundred sixty-six thousand, eighty-seven".