20012220122012 has 24 divisors (see below), whose sum is σ = 36554762020896. Its totient is φ = 9568257351488.

The previous prime is 20012220122009. The next prime is 20012220122039. The reversal of 20012220122012 is 21022102221002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31553003 + ... + 32180994.

It is an arithmetic number, because the mean of its divisors is an integer number (1523115084204).

Almost surely, 2^{20012220122012} is an apocalyptic number.

It is an amenable number.

20012220122012 is a deficient number, since it is larger than the sum of its proper divisors (16542541898884).

20012220122012 is a wasteful number, since it uses less digits than its factorization.

20012220122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63737437 (or 63737435 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20012220122012 its reverse (21022102221002), we get a palindrome (41034322343014).

The spelling of 20012220122012 in words is "twenty trillion, twelve billion, two hundred twenty million, one hundred twenty-two thousand, twelve".