121012208 has 20 divisors (see below), whose sum is σ = 235870320. Its totient is φ = 60142464.

The previous prime is 121012207. The next prime is 121012211. The reversal of 121012208 is 802210121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19973 + ... + 25316.

It is an arithmetic number, because the mean of its divisors is an integer number (11793516).

Almost surely, 2^121012208 is an apocalyptic number.

It is an amenable number.

121012208 is a deficient number, since it is larger than the sum of its proper divisors (114858112).

121012208 is a wasteful number, since it uses less digits than its factorization.

121012208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45464 (or 45458 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 121012208 is about 11000.5548950951. The cubic root of 121012208 is about 494.6253778799.

Adding to 121012208 its reverse (802210121), we get a palindrome (923222329).

The spelling of 121012208 in words is "one hundred twenty-one million, twelve thousand, two hundred eight".