2101200012111 has 4 divisors (see below), whose sum is σ = 2801600016152. Its totient is φ = 1400800008072.

The previous prime is 2101200012083. The next prime is 2101200012113. The reversal of 2101200012111 is 1112100021012.

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

It is not a de Polignac number, because 2101200012111 - 2²² = 2101195817807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101200012113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350200002016 + ... + 350200002021.

It is an arithmetic number, because the mean of its divisors is an integer number (700400004038).

Almost surely, 2^{2101200012111} is an apocalyptic number.

2101200012111 is a deficient number, since it is larger than the sum of its proper divisors (700400004041).

2101200012111 is an equidigital number, since it uses as much as digits as its factorization.

2101200012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700400004040.

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

Adding to 2101200012111 its reverse (1112100021012), we get a palindrome (3213300033123).

The spelling of 2101200012111 in words is "two trillion, one hundred one billion, two hundred million, twelve thousand, one hundred eleven".