20012221100202 has 64 divisors (see below), whose sum is σ = 42894783166464. Its totient is φ = 6208057753920.

The previous prime is 20012221100197. The next prime is 20012221100203. The reversal of 20012221100202 is 20200112221002.

It is not an unprimeable number, because it can be changed into a prime (20012221100203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297293833 + ... + 297361139.

It is an arithmetic number, because the mean of its divisors is an integer number (670230986976).

Almost surely, 2^{20012221100202} is an apocalyptic number.

20012221100202 is an abundant number, since it is smaller than the sum of its proper divisors (22882562066262).

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

20012221100202 is a wasteful number, since it uses less digits than its factorization.

20012221100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125603.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20012221100202 its reverse (20200112221002), we get a palindrome (40212333321204).

The spelling of 20012221100202 in words is "twenty trillion, twelve billion, two hundred twenty-one million, one hundred thousand, two hundred two".