2102221011 has 32 divisors (see below), whose sum is σ = 3203629056. Its totient is φ = 1214532000.

The previous prime is 2102221007. The next prime is 2102221013. The reversal of 2102221011 is 1101222012.

It is not a de Polignac number, because 2102221011 - 2² = 2102221007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2102221013) 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, 53206 + ... + 83876.

It is an arithmetic number, because the mean of its divisors is an integer number (100113408).

Almost surely, 2^2102221011 is an apocalyptic number.

2102221011 is a deficient number, since it is larger than the sum of its proper divisors (1101408045).

2102221011 is a wasteful number, since it uses less digits than its factorization.

2102221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30783.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2102221011 is about 45849.9837622654. The cubic root of 2102221011 is about 1281.0304631318.

Adding to 2102221011 its reverse (1101222012), we get a palindrome (3203443023).

The spelling of 2102221011 in words is "two billion, one hundred two million, two hundred twenty-one thousand, eleven".