2100001011 has 16 divisors (see below), whose sum is σ = 2982887040. Its totient is φ = 1310333760.

The previous prime is 2100000997. The next prime is 2100001021. The reversal of 2100001011 is 1101000012.

It is not a de Polignac number, because 2100001011 - 2¹³ = 2099992819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2100001021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217210 + ... + 226671.

It is an arithmetic number, because the mean of its divisors is an integer number (186430440).

Almost surely, 2^2100001011 is an apocalyptic number.

2100001011 is a deficient number, since it is larger than the sum of its proper divisors (882886029).

2100001011 is a wasteful number, since it uses less digits than its factorization.

2100001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443986.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 2100001011 is about 45825.7679804714. The cubic root of 2100001011 is about 1280.5793704899.

Adding to 2100001011 its reverse (1101000012), we get a palindrome (3201001023).

Subtracting from 2100001011 its reverse (1101000012), we obtain a palindrome (999000999).

The spelling of 2100001011 in words is "two billion, one hundred million, one thousand, eleven".