2220221011 has 4 divisors (see below), whose sum is σ = 2220591024. Its totient is φ = 2219851000.

The previous prime is 2220220999. The next prime is 2220221071. The reversal of 2220221011 is 1101220222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2220221011 - 2⁷ = 2220220883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220220982 and 2220221000.

It is not an unprimeable number, because it can be changed into a prime (2220221071) 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, 175855 + ... + 188056.

It is an arithmetic number, because the mean of its divisors is an integer number (555147756).

Almost surely, 2^2220221011 is an apocalyptic number.

2220221011 is a deficient number, since it is larger than the sum of its proper divisors (370013).

2220221011 is an equidigital number, since it uses as much as digits as its factorization.

2220221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370012.

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

The square root of 2220221011 is about 47119.2212478093. The cubic root of 2220221011 is about 1304.5640388896.

Adding to 2220221011 its reverse (1101220222), we get a palindrome (3321441233).

The spelling of 2220221011 in words is "two billion, two hundred twenty million, two hundred twenty-one thousand, eleven".