40212111 has 8 divisors (see below), whose sum is σ = 53650480. Its totient is φ = 26790912.

The previous prime is 40212101. The next prime is 40212121. The reversal of 40212111 is 11121204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40212101) and next prime (40212121).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40212111 - 2⁵ = 40212079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40212101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2895 + ... + 9423.

It is an arithmetic number, because the mean of its divisors is an integer number (6706310).

Almost surely, 2^40212111 is an apocalyptic number.

40212111 is a deficient number, since it is larger than the sum of its proper divisors (13438369).

40212111 is a wasteful number, since it uses less digits than its factorization.

40212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8585.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 40212111 is about 6341.3019956473. The cubic root of 40212111 is about 342.5986317958.

Adding to 40212111 its reverse (11121204), we get a palindrome (51333315).

The spelling of 40212111 in words is "forty million, two hundred twelve thousand, one hundred eleven".