4012121208 has 16 divisors (see below), whose sum is σ = 10030303080. Its totient is φ = 1337373728.

The previous prime is 4012121171. The next prime is 4012121209. The reversal of 4012121208 is 8021212104.

4012121208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4012121209) 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, 83585835 + ... + 83585882.

Almost surely, 2^4012121208 is an apocalyptic number.

It is an amenable number.

4012121208 is an abundant number, since it is smaller than the sum of its proper divisors (6018181872).

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

4012121208 is a wasteful number, since it uses less digits than its factorization.

4012121208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167171726 (or 167171722 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 4012121208 is about 63341.3072804785. The cubic root of 4012121208 is about 1589.0028699196.

The spelling of 4012121208 in words is "four billion, twelve million, one hundred twenty-one thousand, two hundred eight".