121218027 has 16 divisors (see below), whose sum is σ = 192744960. Its totient is φ = 66255552.

The previous prime is 121217983. The next prime is 121218059. The reversal of 121218027 is 720812121.

It is not a de Polignac number, because 121218027 - 2¹¹ = 121215979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121217988 and 121218006.

It is not an unprimeable number, because it can be changed into a prime (121218127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125002 + ... + 125967.

It is an arithmetic number, because the mean of its divisors is an integer number (12046560).

Almost surely, 2^121218027 is an apocalyptic number.

121218027 is a deficient number, since it is larger than the sum of its proper divisors (71526933).

121218027 is a wasteful number, since it uses less digits than its factorization.

121218027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251002.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 121218027 is about 11009.9058579081. The cubic root of 121218027 is about 494.9056406201.

The spelling of 121218027 in words is "one hundred twenty-one million, two hundred eighteen thousand, twenty-seven".