121100008 has 8 divisors (see below), whose sum is σ = 227062530. Its totient is φ = 60550000.

The previous prime is 121100003. The next prime is 121100011. The reversal of 121100008 is 800001121.

It can be written as a sum of positive squares in only one way, i.e., 102454884 + 18645124 = 10122^2 + 4318^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (121100003) 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 as a sum of consecutive naturals, namely, 7568743 + ... + 7568758.

Almost surely, 2^121100008 is an apocalyptic number.

It is an amenable number.

121100008 is a deficient number, since it is larger than the sum of its proper divisors (105962522).

121100008 is a wasteful number, since it uses less digits than its factorization.

121100008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15137507 (or 15137503 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 121100008 is about 11004.5448792760. The cubic root of 121100008 is about 494.7449735529.

Adding to 121100008 its reverse (800001121), we get a palindrome (921101129).

The spelling of 121100008 in words is "one hundred twenty-one million, one hundred thousand, eight".