2102111020011 has 4 divisors (see below), whose sum is σ = 2802814693352. Its totient is φ = 1401407346672.

The previous prime is 2102111020007. The next prime is 2102111020043. The reversal of 2102111020011 is 1100201112012.

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

It is not a de Polignac number, because 2102111020011 - 2² = 2102111020007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102111020091) 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, 350351836666 + ... + 350351836671.

It is an arithmetic number, because the mean of its divisors is an integer number (700703673338).

Almost surely, 2^{2102111020011} is an apocalyptic number.

2102111020011 is a deficient number, since it is larger than the sum of its proper divisors (700703673341).

2102111020011 is an equidigital number, since it uses as much as digits as its factorization.

2102111020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700703673340.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2102111020011 its reverse (1100201112012), we get a palindrome (3202312132023).

The spelling of 2102111020011 in words is "two trillion, one hundred two billion, one hundred eleven million, twenty thousand, eleven".