2102001011 has 4 divisors (see below), whose sum is σ = 2293092024. Its totient is φ = 1910910000.

The previous prime is 2102001007. The next prime is 2102001029. The reversal of 2102001011 is 1101002012.

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

It is a cyclic number.

It is not a de Polignac number, because 2102001011 - 2² = 2102001007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2102001011.

It is not an unprimeable number, because it can be changed into a prime (2102051011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95545490 + ... + 95545511.

It is an arithmetic number, because the mean of its divisors is an integer number (573273006).

Almost surely, 2^2102001011 is an apocalyptic number.

2102001011 is a deficient number, since it is larger than the sum of its proper divisors (191091013).

2102001011 is a wasteful number, since it uses less digits than its factorization.

2102001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191091012.

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

The square root of 2102001011 is about 45847.5845710546. The cubic root of 2102001011 is about 1280.9857744379.

Adding to 2102001011 its reverse (1101002012), we get a palindrome (3203003023).

The spelling of 2102001011 in words is "two billion, one hundred two million, one thousand, eleven".