121000008 has 16 divisors (see below), whose sum is σ = 302500080. Its totient is φ = 40333328.

The previous prime is 121000003. The next prime is 121000049. The reversal of 121000008 is 800000121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 120999957 and 121000002.

It is not an unprimeable number, because it can be changed into a prime (121000003) by changing a digit.

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, 2520810 + ... + 2520857.

It is an arithmetic number, because the mean of its divisors is an integer number (18906255).

Almost surely, 2^121000008 is an apocalyptic number.

It is an amenable number.

121000008 is an abundant number, since it is smaller than the sum of its proper divisors (181500072).

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

121000008 is a wasteful number, since it uses less digits than its factorization.

121000008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5041676 (or 5041672 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 121000008 is about 11000.0003636364. Note that the first 3 decimals coincide. The cubic root of 121000008 is about 494.6087552253.

Adding to 121000008 its reverse (800000121), we get a palindrome (921000129).

The spelling of 121000008 in words is "one hundred twenty-one million, eight", and thus it is an aban number.