121241087 has 4 divisors (see below), whose sum is σ = 132263016. Its totient is φ = 110219160.

The previous prime is 121241077. The next prime is 121241137. The reversal of 121241087 is 780142121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121241087 - 2²⁰ = 120192511 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 (121241077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5510948 + ... + 5510969.

It is an arithmetic number, because the mean of its divisors is an integer number (33065754).

Almost surely, 2^121241087 is an apocalyptic number.

121241087 is a deficient number, since it is larger than the sum of its proper divisors (11021929).

121241087 is a wasteful number, since it uses less digits than its factorization.

121241087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11021928.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 121241087 is about 11010.9530468529. The cubic root of 121241087 is about 494.9370215424.

The spelling of 121241087 in words is "one hundred twenty-one million, two hundred forty-one thousand, eighty-seven".