22012211 has 8 divisors (see below), whose sum is σ = 23790480. Its totient is φ = 20246112.

The previous prime is 22012187. The next prime is 22012231. The reversal of 22012211 is 11221022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22012211 - 2²² = 17817907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22012192 and 22012201.

It is not an unprimeable number, because it can be changed into a prime (22012231) 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, 920 + ... + 6698.

It is an arithmetic number, because the mean of its divisors is an integer number (2973810).

Almost surely, 2^22012211 is an apocalyptic number.

22012211 is a deficient number, since it is larger than the sum of its proper divisors (1778269).

22012211 is a wasteful number, since it uses less digits than its factorization.

22012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6085.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 22012211 is about 4691.7172762220. The cubic root of 22012211 is about 280.2557654501.

Adding to 22012211 its reverse (11221022), we get a palindrome (33233233).

The spelling of 22012211 in words is "twenty-two million, twelve thousand, two hundred eleven".