121669018 has 8 divisors (see below), whose sum is σ = 182620980. Its totient is φ = 60795360.

The previous prime is 121669003. The next prime is 121669039. The reversal of 121669018 is 810966121.

It can be written as a sum of positive squares in 2 ways, for example, as 118309129 + 3359889 = 10877^2 + 1833^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15523 + ... + 22006.

Almost surely, 2^121669018 is an apocalyptic number.

121669018 is a deficient number, since it is larger than the sum of its proper divisors (60951962).

121669018 is a wasteful number, since it uses less digits than its factorization.

121669018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39152.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 121669018 is about 11030.3679902350. The cubic root of 121669018 is about 495.5186455879.

The spelling of 121669018 in words is "one hundred twenty-one million, six hundred sixty-nine thousand, eighteen".