121028018 has 16 divisors (see below), whose sum is σ = 183474720. Its totient is φ = 59872800.

The previous prime is 121027993. The next prime is 121028029. The reversal of 121028018 is 810820121.

It is a happy number.

It is a super-2 number, since 2×121028018² = 29295562282016648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121027984 and 121028002.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 149198 + ... + 150006.

It is an arithmetic number, because the mean of its divisors is an integer number (11467170).

Almost surely, 2^121028018 is an apocalyptic number.

121028018 is a deficient number, since it is larger than the sum of its proper divisors (62446702).

121028018 is a wasteful number, since it uses less digits than its factorization.

121028018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513.

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 121028018 is about 11001.2734717395. The cubic root of 121028018 is about 494.6469175434.

Adding to 121028018 its reverse (810820121), we get a palindrome (931848139).

The spelling of 121028018 in words is "one hundred twenty-one million, twenty-eight thousand, eighteen".