20102210002111 has 4 divisors (see below), whose sum is σ = 20102256381592. Its totient is φ = 20102163622632.

The previous prime is 20102210002093. The next prime is 20102210002139. The reversal of 20102210002111 is 11120001220102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20102210002111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20102210002091 and 20102210002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102210002141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22533405 + ... + 23408518.

It is an arithmetic number, because the mean of its divisors is an integer number (5025564095398).

Almost surely, 2^{20102210002111} is an apocalyptic number.

20102210002111 is a deficient number, since it is larger than the sum of its proper divisors (46379481).

20102210002111 is an equidigital number, since it uses as much as digits as its factorization.

20102210002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46379480.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20102210002111 its reverse (11120001220102), we get a palindrome (31222211222213).

The spelling of 20102210002111 in words is "twenty trillion, one hundred two billion, two hundred ten million, two thousand, one hundred eleven".