22019201 has 4 divisors (see below), whose sum is σ = 22038852. Its totient is φ = 21999552.

The previous prime is 22019197. The next prime is 22019203. The reversal of 22019201 is 10291022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13868176 + 8151025 = 3724^2 + 2855^2 .

It is a cyclic number.

It is not a de Polignac number, because 22019201 - 2² = 22019197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22019201.

It is not an unprimeable number, because it can be changed into a prime (22019203) 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, 8036 + ... + 10421.

It is an arithmetic number, because the mean of its divisors is an integer number (5509713).

Almost surely, 2^22019201 is an apocalyptic number.

It is an amenable number.

22019201 is a deficient number, since it is larger than the sum of its proper divisors (19651).

22019201 is a wasteful number, since it uses less digits than its factorization.

22019201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19650.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 22019201 is about 4692.4621468905. The cubic root of 22019201 is about 280.2854274784.

The spelling of 22019201 in words is "twenty-two million, nineteen thousand, two hundred one".