2100020000111 has 6 divisors (see below), whose sum is σ = 2308286446536. Its totient is φ = 1909109090900.

The previous prime is 2100020000107. The next prime is 2100020000149. The reversal of 2100020000111 is 1110000200012.

It is not a de Polignac number, because 2100020000111 - 2² = 2100020000107 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 (2100020000191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8677768475 + ... + 8677768716.

It is an arithmetic number, because the mean of its divisors is an integer number (384714407756).

Almost surely, 2^{2100020000111} is an apocalyptic number.

2100020000111 is a deficient number, since it is larger than the sum of its proper divisors (208266446425).

2100020000111 is a wasteful number, since it uses less digits than its factorization.

2100020000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17355537213 (or 17355537202 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 2100020000111 its reverse (1110000200012), we get a palindrome (3210020200123).

It can be divided in two parts, 21000200001 and 11, that added together give a palindrome (21000200012).

The spelling of 2100020000111 in words is "two trillion, one hundred billion, twenty million, one hundred eleven", and thus it is an aban number.