20102222222012 has 48 divisors (see below), whose sum is σ = 40297921101312. Its totient is φ = 8595227995200.

The previous prime is 20102222222003. The next prime is 20102222222041. The reversal of 20102222222012 is 21022222220102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23030762 + ... + 23887662.

It is an arithmetic number, because the mean of its divisors is an integer number (839540022944).

Almost surely, 2^{20102222222012} is an apocalyptic number.

It is an amenable number.

20102222222012 is an abundant number, since it is smaller than the sum of its proper divisors (20195698879300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20102222222012 is a wasteful number, since it uses less digits than its factorization.

20102222222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858858 (or 858856 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20102222222012 its reverse (21022222220102), we get a palindrome (41124444442114).

The spelling of 20102222222012 in words is "twenty trillion, one hundred two billion, two hundred twenty-two million, two hundred twenty-two thousand, twelve".