121018536 has 40 divisors (see below), whose sum is σ = 338965770. Its totient is φ = 40339296.

The previous prime is 121018523. The next prime is 121018589. The reversal of 121018536 is 635810121.

121018536 is a `hidden beast` number, since 121 + 0 + 1 + 8 + 536 = 666.

It can be written as a sum of positive squares in only one way, i.e., 103428900 + 17589636 = 10170^2 + 4194^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 92731 + ... + 94026.

Almost surely, 2^121018536 is an apocalyptic number.

It is an amenable number.

121018536 is an abundant number, since it is smaller than the sum of its proper divisors (217947234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121018536 is a wasteful number, since it uses less digits than its factorization.

121018536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186775 (or 186762 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 121018536 is about 11000.8425131896. The cubic root of 121018536 is about 494.6339994201.

Adding to 121018536 its reverse (635810121), we get a palindrome (756828657).

The spelling of 121018536 in words is "one hundred twenty-one million, eighteen thousand, five hundred thirty-six".