2101002011 has 2 divisors, whose sum is σ = 2101002012. Its totient is φ = 2101002010.

The previous prime is 2101001983. The next prime is 2101002023. The reversal of 2101002011 is 1102001012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2101002011 - 2²² = 2096807707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2101002011.

It is not a weakly prime, because it can be changed into another prime (2101002061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050501005 + 1050501006.

It is an arithmetic number, because the mean of its divisors is an integer number (1050501006).

Almost surely, 2^2101002011 is an apocalyptic number.

2101002011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101002011 is an equidigital number, since it uses as much as digits as its factorization.

2101002011 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2101002011 is about 45836.6884820446. The cubic root of 2101002011 is about 1280.7828079048.

Adding to 2101002011 its reverse (1102001012), we get a palindrome (3203003023).

Subtracting from 2101002011 its reverse (1102001012), we obtain a palindrome (999000999).

The spelling of 2101002011 in words is "two billion, one hundred one million, two thousand, eleven".