121204008 has 48 divisors (see below), whose sum is σ = 337140180. Its totient is φ = 39308544.

The previous prime is 121204001. The next prime is 121204019. The reversal of 121204008 is 800402121.

It can be written as a sum of positive squares in 2 ways, for example, as 120956004 + 248004 = 10998^2 + 498^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (121204001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20085 + ... + 25412.

Almost surely, 2^121204008 is an apocalyptic number.

121204008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

121204008 is an abundant number, since it is smaller than the sum of its proper divisors (215936172).

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

121204008 is a wasteful number, since it uses less digits than its factorization.

121204008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45546 (or 45539 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 121204008 is about 11009.2691855545. The cubic root of 121204008 is about 494.8865610882.

Adding to 121204008 its reverse (800402121), we get a palindrome (921606129).

The spelling of 121204008 in words is "one hundred twenty-one million, two hundred four thousand, eight".