22211109 has 6 divisors (see below), whose sum is σ = 32082726. Its totient is φ = 14807400.

The previous prime is 22211099. The next prime is 22211131. The reversal of 22211109 is 90111222.

It can be written as a sum of positive squares in only one way, i.e., 20223009 + 1988100 = 4497^2 + 1410^2 .

It is not a de Polignac number, because 22211109 - 2⁹ = 22210597 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22211091 and 22211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211179) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1233942 + ... + 1233959.

It is an arithmetic number, because the mean of its divisors is an integer number (5347121).

Almost surely, 2^22211109 is an apocalyptic number.

It is an amenable number.

22211109 is a deficient number, since it is larger than the sum of its proper divisors (9871617).

22211109 is a wasteful number, since it uses less digits than its factorization.

22211109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467907 (or 2467904 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 22211109 is about 4712.8663252844. The cubic root of 22211109 is about 281.0973476794.

The spelling of 22211109 in words is "twenty-two million, two hundred eleven thousand, one hundred nine".