121828887 has 16 divisors (see below), whose sum is σ = 180986080. Its totient is φ = 80994816.

The previous prime is 121828879. The next prime is 121828891. The reversal of 121828887 is 788828121.

It is not a de Polignac number, because 121828887 - 2³ = 121828879 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 (121828877) 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, 4023 + ... + 16119.

It is an arithmetic number, because the mean of its divisors is an integer number (11311630).

Almost surely, 2^121828887 is an apocalyptic number.

121828887 is a deficient number, since it is larger than the sum of its proper divisors (59157193).

121828887 is a wasteful number, since it uses less digits than its factorization.

121828887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12479 (or 12473 counting only the distinct ones).

The product of its digits is 114688, while the sum is 45.

The square root of 121828887 is about 11037.6123776839. The cubic root of 121828887 is about 495.7355822146.

The spelling of 121828887 in words is "one hundred twenty-one million, eight hundred twenty-eight thousand, eight hundred eighty-seven".