20001122112202 has 128 divisors (see below), whose sum is σ = 39091606732800. Its totient is φ = 7446774048000.

The previous prime is 20001122112163. The next prime is 20001122112203. The reversal of 20001122112202 is 20221122110002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20001122112203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1634205999 + ... + 1634218237.

It is an arithmetic number, because the mean of its divisors is an integer number (305403177600).

Almost surely, 2^{20001122112202} is an apocalyptic number.

20001122112202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20001122112202 is a deficient number, since it is larger than the sum of its proper divisors (19090484620598).

20001122112202 is a wasteful number, since it uses less digits than its factorization.

20001122112202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16012.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20001122112202 its reverse (20221122110002), we get a palindrome (40222244222204).

The spelling of 20001122112202 in words is "twenty trillion, one billion, one hundred twenty-two million, one hundred twelve thousand, two hundred two".