20122012 has 24 divisors (see below), whose sum is σ = 36027936. Its totient is φ = 9831168.

The previous prime is 20121989. The next prime is 20122031. The reversal of 20122012 is 21022102.

It is a self number, because there is not a number n which added to its sum of digits gives 20122012.

It is a congruent number.

It is an unprimeable number.

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, 39753 + ... + 40255.

It is an arithmetic number, because the mean of its divisors is an integer number (1501164).

Almost surely, 2^20122012 is an apocalyptic number.

It is an amenable number.

20122012 is a deficient number, since it is larger than the sum of its proper divisors (15905924).

20122012 is a wasteful number, since it uses less digits than its factorization.

20122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717 (or 715 counting only the distinct ones).

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

The square root of 20122012 is about 4485.7565694094. The cubic root of 20122012 is about 271.9926288372.

Adding to 20122012 its reverse (21022102), we get a palindrome (41144114).

The spelling of 20122012 in words is "twenty million, one hundred twenty-two thousand, twelve".