20101102111211 has 16 divisors (see below), whose sum is σ = 22882116487680. Its totient is φ = 17479043915520.

The previous prime is 20101102111177. The next prime is 20101102111247. The reversal of 20101102111211 is 11211120110102.

It is a de Polignac number, because none of the positive numbers 2^k-20101102111211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101102111411) by changing a digit.

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, 29218730 + ... + 29898768.

It is an arithmetic number, because the mean of its divisors is an integer number (1430132280480).

Almost surely, 2^{20101102111211} is an apocalyptic number.

20101102111211 is a deficient number, since it is larger than the sum of its proper divisors (2781014376469).

20101102111211 is a wasteful number, since it uses less digits than its factorization.

20101102111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796906.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20101102111211 its reverse (11211120110102), we get a palindrome (31312222221313).

The spelling of 20101102111211 in words is "twenty trillion, one hundred one billion, one hundred two million, one hundred eleven thousand, two hundred eleven".