20108212 has 24 divisors (see below), whose sum is σ = 38465280. Its totient is φ = 9156480.

The previous prime is 20108201. The next prime is 20108227. The reversal of 20108212 is 21280102.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2662 + ... + 6877.

It is an arithmetic number, because the mean of its divisors is an integer number (1602720).

Almost surely, 2^20108212 is an apocalyptic number.

It is an amenable number.

20108212 is a deficient number, since it is larger than the sum of its proper divisors (18357068).

20108212 is a wasteful number, since it uses less digits than its factorization.

20108212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9591 (or 9589 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 20108212 is about 4484.2181035271. The cubic root of 20108212 is about 271.9304356417.

Adding to 20108212 its reverse (21280102), we get a palindrome (41388314).

It can be divided in two parts, 20 and 108212, that multiplied together give a triangular number (2164240 = T₂₀₈₀).

The spelling of 20108212 in words is "twenty million, one hundred eight thousand, two hundred twelve".