22002201 has 24 divisors (see below), whose sum is σ = 34384896. Its totient is φ = 13476960.

The previous prime is 22002187. The next prime is 22002203. The reversal of 22002201 is 10220022.

It is not a de Polignac number, because 22002201 - 2¹⁹ = 21477913 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22002203) 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, 44566 + ... + 45056.

It is an arithmetic number, because the mean of its divisors is an integer number (1432704).

Almost surely, 2^22002201 is an apocalyptic number.

It is an amenable number.

22002201 is a deficient number, since it is larger than the sum of its proper divisors (12382695).

22002201 is a wasteful number, since it uses less digits than its factorization.

22002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 22002201 is about 4690.6503813437. The cubic root of 22002201 is about 280.2132771306.

Adding to 22002201 its reverse (10220022), we get a palindrome (32222223).

The spelling of 22002201 in words is "twenty-two million, two thousand, two hundred one".