22131201 has 8 divisors (see below), whose sum is σ = 29590144. Its totient is φ = 14713200.

The previous prime is 22131199. The next prime is 22131211. The reversal of 22131201 is 10213122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22131201 - 2¹ = 22131199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22131211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8950 + ... + 11151.

It is an arithmetic number, because the mean of its divisors is an integer number (3698768).

Almost surely, 2^22131201 is an apocalyptic number.

It is an amenable number.

22131201 is a deficient number, since it is larger than the sum of its proper divisors (7458943).

22131201 is a wasteful number, since it uses less digits than its factorization.

22131201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20471.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 22131201 is about 4704.3810432404. The cubic root of 22131201 is about 280.7598451318.

Adding to 22131201 its reverse (10213122), we get a palindrome (32344323).

The spelling of 22131201 in words is "twenty-two million, one hundred thirty-one thousand, two hundred one".