220012211 has 4 divisors (see below), whose sum is σ = 221118000. Its totient is φ = 218906424.

The previous prime is 220012207. The next prime is 220012297. The reversal of 220012211 is 112210022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220012211 - 2² = 220012207 is a prime.

It is a super-3 number, since 3×220012211³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220012192 and 220012201.

It is not an unprimeable number, because it can be changed into a prime (220012201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552596 + ... + 552993.

It is an arithmetic number, because the mean of its divisors is an integer number (55279500).

Almost surely, 2^220012211 is an apocalyptic number.

220012211 is a deficient number, since it is larger than the sum of its proper divisors (1105789).

220012211 is a wasteful number, since it uses less digits than its factorization.

220012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105788.

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

The square root of 220012211 is about 14832.8086012056. The cubic root of 220012211 is about 603.6922424877.

Adding to 220012211 its reverse (112210022), we get a palindrome (332222233).

The spelling of 220012211 in words is "two hundred twenty million, twelve thousand, two hundred eleven".