20412212 has 12 divisors (see below), whose sum is σ = 36049860. Its totient is φ = 10112256.

The previous prime is 20412209. The next prime is 20412221. The reversal of 20412212 is 21221402.

It can be written as a sum of positive squares in 2 ways, for example, as 14776336 + 5635876 = 3844^2 + 2374^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22973 + ... + 23844.

It is an arithmetic number, because the mean of its divisors is an integer number (3004155).

Almost surely, 2^20412212 is an apocalyptic number.

It is an amenable number.

20412212 is a deficient number, since it is larger than the sum of its proper divisors (15637648).

20412212 is a wasteful number, since it uses less digits than its factorization.

20412212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46930 (or 46928 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 20412212 is about 4517.9876051180. The cubic root of 20412212 is about 273.2939536102.

Adding to 20412212 its reverse (21221402), we get a palindrome (41633614).

The spelling of 20412212 in words is "twenty million, four hundred twelve thousand, two hundred twelve".