4001212 has 6 divisors (see below), whose sum is σ = 7002128. Its totient is φ = 2000604.

The previous prime is 4001197. The next prime is 4001213. The reversal of 4001212 is 2121004.

4001212 is a modest number, since divided by 1212 gives 400 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500148 + ... + 500155.

Almost surely, 2^4001212 is an apocalyptic number.

It is an amenable number.

4001212 is a deficient number, since it is larger than the sum of its proper divisors (3000916).

4001212 is a wasteful number, since it uses less digits than its factorization.

4001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000307 (or 1000305 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 4001212 is about 2000.3029770512. The cubic root of 4001212 is about 158.7561363284.

Adding to 4001212 its reverse (2121004), we get a palindrome (6122216).

The spelling of 4001212 in words is "four million, one thousand, two hundred twelve".