2221011011 has 4 divisors (see below), whose sum is σ = 2221150752. Its totient is φ = 2220871272.

The previous prime is 2221011007. The next prime is 2221011029. The reversal of 2221011011 is 1101101222.

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 2221011011 - 2² = 2221011007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221010983 and 2221011001.

It is not an unprimeable number, because it can be changed into a prime (2221011511) 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, 42440 + ... + 79013.

It is an arithmetic number, because the mean of its divisors is an integer number (555287688).

Almost surely, 2^2221011011 is an apocalyptic number.

2221011011 is a deficient number, since it is larger than the sum of its proper divisors (139741).

2221011011 is a wasteful number, since it uses less digits than its factorization.

2221011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139740.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2221011011 is about 47127.6034930697. The cubic root of 2221011011 is about 1304.7187507213.

Adding to 2221011011 its reverse (1101101222), we get a palindrome (3322112233).

The spelling of 2221011011 in words is "two billion, two hundred twenty-one million, eleven thousand, eleven".