22201215 has 16 divisors (see below), whose sum is σ = 37392000. Its totient is φ = 11217312.

The previous prime is 22201199. The next prime is 22201217. The reversal of 22201215 is 51210222.

It is not a de Polignac number, because 22201215 - 2⁴ = 22201199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 22201194 and 22201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38665 + ... + 39234.

It is an arithmetic number, because the mean of its divisors is an integer number (2337000).

Almost surely, 2^22201215 is an apocalyptic number.

22201215 is a deficient number, since it is larger than the sum of its proper divisors (15190785).

22201215 is a wasteful number, since it uses less digits than its factorization.

22201215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77926.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 22201215 is about 4711.8165286861. The cubic root of 22201215 is about 281.0556029497.

Adding to 22201215 its reverse (51210222), we get a palindrome (73411437).

The spelling of 22201215 in words is "twenty-two million, two hundred one thousand, two hundred fifteen".