22018011 has 16 divisors (see below), whose sum is σ = 30236160. Its totient is φ = 14245920.

The previous prime is 22017973. The next prime is 22018037. The reversal of 22018011 is 11081022.

It is not a de Polignac number, because 22018011 - 2¹⁰ = 22016987 is a prime.

It is a super-2 number, since 2×22018011² = 969585616792242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22018211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13696 + ... + 15218.

It is an arithmetic number, because the mean of its divisors is an integer number (1889760).

Almost surely, 2^22018011 is an apocalyptic number.

22018011 is a deficient number, since it is larger than the sum of its proper divisors (8218149).

22018011 is a wasteful number, since it uses less digits than its factorization.

22018011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 22018011 is about 4692.3353460724. The cubic root of 22018011 is about 280.2803781631.

Adding to 22018011 its reverse (11081022), we get a palindrome (33099033).

The spelling of 22018011 in words is "twenty-two million, eighteen thousand, eleven".