20111100202 has 16 divisors (see below), whose sum is σ = 32111164800. Its totient is φ = 9419271840.

The previous prime is 20111100193. The next prime is 20111100209. The reversal of 20111100202 is 20200111102.

It is not an unprimeable number, because it can be changed into a prime (20111100209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2969874 + ... + 2976637.

It is an arithmetic number, because the mean of its divisors is an integer number (2006947800).

Almost surely, 2^20111100202 is an apocalyptic number.

20111100202 is a deficient number, since it is larger than the sum of its proper divisors (12000064598).

20111100202 is a wasteful number, since it uses less digits than its factorization.

20111100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5946621.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20111100202 its reverse (20200111102), we get a palindrome (40311211304).

The spelling of 20111100202 in words is "twenty billion, one hundred eleven million, one hundred thousand, two hundred two".