121002127 has 16 divisors (see below), whose sum is σ = 131103360. Its totient is φ = 111320352.

The previous prime is 121002121. The next prime is 121002157. The reversal of 121002127 is 721200121.

It is not a de Polignac number, because 121002127 - 2¹⁹ = 120477839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121002127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002121) 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, 107188 + ... + 108310.

It is an arithmetic number, because the mean of its divisors is an integer number (8193960).

Almost surely, 2^121002127 is an apocalyptic number.

121002127 is a deficient number, since it is larger than the sum of its proper divisors (10101233).

121002127 is a wasteful number, since it uses less digits than its factorization.

121002127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 121002127 is about 11000.0966813933. The cubic root of 121002127 is about 494.6116424699.

Adding to 121002127 its reverse (721200121), we get a palindrome (842202248).

The spelling of 121002127 in words is "one hundred twenty-one million, two thousand, one hundred twenty-seven".