2221020011 has 8 divisors (see below), whose sum is σ = 2590111200. Its totient is φ = 1903731144.

The previous prime is 2221019987. The next prime is 2221020019. The reversal of 2221020011 is 1100201222.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2221020011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221019974 and 2221020001.

It is not an unprimeable number, because it can be changed into a prime (2221020019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3237296 + ... + 3237981.

It is an arithmetic number, because the mean of its divisors is an integer number (323763900).

Almost surely, 2^2221020011 is an apocalyptic number.

2221020011 is a deficient number, since it is larger than the sum of its proper divisors (369091189).

2221020011 is an frugal number, since it uses more digits than its factorization.

2221020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475298 (or 6475284 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2221020011 is about 47127.6989784140. The cubic root of 2221020011 is about 1304.7205130497.

Adding to 2221020011 its reverse (1100201222), we get a palindrome (3321221233).

The spelling of 2221020011 in words is "two billion, two hundred twenty-one million, twenty thousand, eleven".