20212102 has 16 divisors (see below), whose sum is σ = 31150080. Its totient is φ = 9832392.

The previous prime is 20212097. The next prime is 20212103. The reversal of 20212102 is 20121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212103) 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 7 ways as a sum of consecutive naturals, for example, 11323 + ... + 12985.

It is an arithmetic number, because the mean of its divisors is an integer number (1946880).

Almost surely, 2^20212102 is an apocalyptic number.

20212102 is a deficient number, since it is larger than the sum of its proper divisors (10937978).

20212102 is a wasteful number, since it uses less digits than its factorization.

20212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827.

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

The square root of 20212102 is about 4495.7871390892. The cubic root of 20212102 is about 272.3979451186.

Adding to 20212102 its reverse (20121202), we get a palindrome (40333304).

The spelling of 20212102 in words is "twenty million, two hundred twelve thousand, one hundred two".