2100020011101 has 24 divisors (see below), whose sum is σ = 3039596040000. Its totient is φ = 1397139112512.

The previous prime is 2100020011013. The next prime is 2100020011183. The reversal of 2100020011101 is 1011100200012.

It is a happy number.

It is not a de Polignac number, because 2100020011101 - 2¹¹ = 2100020009053 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100020011601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8608000 + ... + 8848598.

It is an arithmetic number, because the mean of its divisors is an integer number (126649835000).

Almost surely, 2^{2100020011101} is an apocalyptic number.

It is an amenable number.

2100020011101 is a deficient number, since it is larger than the sum of its proper divisors (939576028899).

2100020011101 is a wasteful number, since it uses less digits than its factorization.

2100020011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242593 (or 242590 counting only the distinct ones).

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

Adding to 2100020011101 its reverse (1011100200012), we get a palindrome (3111120211113).

The spelling of 2100020011101 in words is "two trillion, one hundred billion, twenty million, eleven thousand, one hundred one".