4004021212 has 24 divisors (see below), whose sum is σ = 7173204080. Its totient is φ = 1955007360.

The previous prime is 4004021209. The next prime is 4004021269. The reversal of 4004021212 is 2121204004.

It is a super-2 number, since 2×4004021212² = 32064371732291897888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 25113 + ... + 92944.

Almost surely, 2^4004021212 is an apocalyptic number.

It is an amenable number.

4004021212 is a deficient number, since it is larger than the sum of its proper divisors (3169182868).

4004021212 is a wasteful number, since it uses less digits than its factorization.

4004021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118261 (or 118259 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 4004021212 is about 63277.3356898029. The cubic root of 4004021212 is about 1587.9328134941.

Adding to 4004021212 its reverse (2121204004), we get a palindrome (6125225216).

The spelling of 4004021212 in words is "four billion, four million, twenty-one thousand, two hundred twelve".