22212201 has 16 divisors (see below), whose sum is σ = 33098688. Its totient is φ = 13132800.

The previous prime is 22212199. The next prime is 22212233. The reversal of 22212201 is 10221222.

It is not a de Polignac number, because 22212201 - 2¹ = 22212199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22212271) 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, 6856 + ... + 9561.

It is an arithmetic number, because the mean of its divisors is an integer number (2068668).

Almost surely, 2^22212201 is an apocalyptic number.

It is an amenable number.

22212201 is a deficient number, since it is larger than the sum of its proper divisors (10886487).

22212201 is a wasteful number, since it uses less digits than its factorization.

22212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16472.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 22212201 is about 4712.9821769237. The cubic root of 22212201 is about 281.1019542822.

Adding to 22212201 its reverse (10221222), we get a palindrome (32433423).

The spelling of 22212201 in words is "twenty-two million, two hundred twelve thousand, two hundred one".