2101000111002 has 64 divisors (see below), whose sum is σ = 5036749522560. Its totient is φ = 645341064192.

The previous prime is 2101000110919. The next prime is 2101000111003. The reversal of 2101000111002 is 2001110001012.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (2101000111003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2188428 + ... + 2998535.

It is an arithmetic number, because the mean of its divisors is an integer number (78699211290).

Almost surely, 2^{2101000111002} is an apocalyptic number.

2101000111002 is an abundant number, since it is smaller than the sum of its proper divisors (2935749411558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101000111002 is a wasteful number, since it uses less digits than its factorization.

2101000111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5187564 (or 5187558 counting only the distinct ones).

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

Adding to 2101000111002 its reverse (2001110001012), we get a palindrome (4102110112014).

The spelling of 2101000111002 in words is "two trillion, one hundred one billion, one hundred eleven thousand, two".