40211212 has 12 divisors (see below), whose sum is σ = 70483896. Its totient is φ = 20072960.

The previous prime is 40211209. The next prime is 40211233. The reversal of 40211212 is 21211204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40211192 and 40211201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5278 + ... + 10405.

It is an arithmetic number, because the mean of its divisors is an integer number (5873658).

Almost surely, 2^40211212 is an apocalyptic number.

It is an amenable number.

40211212 is a deficient number, since it is larger than the sum of its proper divisors (30272684).

40211212 is a wasteful number, since it uses less digits than its factorization.

40211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16328 (or 16326 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 40211212 is about 6341.2311107544. The cubic root of 40211212 is about 342.5960786805.

Adding to 40211212 its reverse (21211204), we get a palindrome (61422416).

The spelling of 40211212 in words is "forty million, two hundred eleven thousand, two hundred twelve".