20102212 has 36 divisors (see below), whose sum is σ = 38552976. Its totient is φ = 9166560.

The previous prime is 20102153. The next prime is 20102213. The reversal of 20102212 is 21220102.

It is not an unprimeable number, because it can be changed into a prime (20102213) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 88443 + ... + 88669.

It is an arithmetic number, because the mean of its divisors is an integer number (1070916).

Almost surely, 2^20102212 is an apocalyptic number.

It is an amenable number.

20102212 is a deficient number, since it is larger than the sum of its proper divisors (18450764).

20102212 is a wasteful number, since it uses less digits than its factorization.

20102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 373 counting only the distinct ones).

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

The square root of 20102212 is about 4483.5490406596. The cubic root of 20102212 is about 271.9033862465.

Adding to 20102212 its reverse (21220102), we get a palindrome (41322314).

It can be divided in two parts, 20102 and 212, that multiplied together give a palindrome (4261624).

The spelling of 20102212 in words is "twenty million, one hundred two thousand, two hundred twelve".