22331201 has 4 divisors (see below), whose sum is σ = 22552404. Its totient is φ = 22110000.

The previous prime is 22331161. The next prime is 22331203. The reversal of 22331201 is 10213322.

It is a happy number.

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 11937025 + 10394176 = 3455^2 + 3224^2 .

It is a cyclic number.

It is not a de Polignac number, because 22331201 - 2¹⁰ = 22330177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22331203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110450 + ... + 110651.

It is an arithmetic number, because the mean of its divisors is an integer number (5638101).

Almost surely, 2^22331201 is an apocalyptic number.

It is an amenable number.

22331201 is a deficient number, since it is larger than the sum of its proper divisors (221203).

22331201 is a wasteful number, since it uses less digits than its factorization.

22331201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221202.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 22331201 is about 4725.5900160721. The cubic root of 22331201 is about 281.6030538433.

Adding to 22331201 its reverse (10213322), we get a palindrome (32544523).

The spelling of 22331201 in words is "twenty-two million, three hundred thirty-one thousand, two hundred one".