2221011 has 24 divisors (see below), whose sum is σ = 3546816. Its totient is φ = 1330560.

The previous prime is 2221007. The next prime is 2221019. The reversal of 2221011 is 1101222.

It is not a de Polignac number, because 2221011 - 2² = 2221007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2220984 and 2221002.

It is not an unprimeable number, because it can be changed into a prime (2221019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4566 + ... + 5028.

It is an arithmetic number, because the mean of its divisors is an integer number (147784).

2^2221011 is an apocalyptic number.

2221011 is a deficient number, since it is larger than the sum of its proper divisors (1325805).

2221011 is a wasteful number, since it uses less digits than its factorization.

2221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2221011 is about 1490.3056733436. The cubic root of 2221011 is about 130.4718748567.

Adding to 2221011 its reverse (1101222), we get a palindrome (3322233).

The spelling of 2221011 in words is "two million, two hundred twenty-one thousand, eleven".