2102222011 has 4 divisors (see below), whose sum is σ = 2193622992. Its totient is φ = 2010821032.

The previous prime is 2102221991. The next prime is 2102222021. The reversal of 2102222011 is 1102222012.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102222011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102221982 and 2102222000.

It is not an unprimeable number, because it can be changed into a prime (2102222021) 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, 45700456 + ... + 45700501.

It is an arithmetic number, because the mean of its divisors is an integer number (548405748).

Almost surely, 2^2102222011 is an apocalyptic number.

2102222011 is a deficient number, since it is larger than the sum of its proper divisors (91400981).

2102222011 is an equidigital number, since it uses as much as digits as its factorization.

2102222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91400980.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2102222011 is about 45849.9946673934. The cubic root of 2102222011 is about 1281.0306662551.

Adding to 2102222011 its reverse (1102222012), we get a palindrome (3204444023).

Subtracting from 2102222011 its reverse (1102222012), we obtain a palindrome (999999999).

The spelling of 2102222011 in words is "two billion, one hundred two million, two hundred twenty-two thousand, eleven".