2100010020111 has 20 divisors (see below), whose sum is σ = 3321584478432. Its totient is φ = 1317653345088.

The previous prime is 2100010020083. The next prime is 2100010020113. The reversal of 2100010020111 is 1110200100012.

It is a happy number.

It is not a de Polignac number, because 2100010020111 - 2¹⁹ = 2100009495823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2100010020093 and 2100010020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100010020113) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 762529495 + ... + 762532248.

Almost surely, 2^{2100010020111} is an apocalyptic number.

2100010020111 is a deficient number, since it is larger than the sum of its proper divisors (1221574458321).

2100010020111 is a wasteful number, since it uses less digits than its factorization.

2100010020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525061772 (or 1525061763 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 2100010020111 its reverse (1110200100012), we get a palindrome (3210210120123).

The spelling of 2100010020111 in words is "two trillion, one hundred billion, ten million, twenty thousand, one hundred eleven".