221422011 has 8 divisors (see below), whose sum is σ = 295325184. Its totient is φ = 147566760.

The previous prime is 221422001. The next prime is 221422013. The reversal of 221422011 is 110224122.

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

It is not a de Polignac number, because 221422011 - 2⁶ = 221421947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221422013) 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, 730 + ... + 21056.

It is an arithmetic number, because the mean of its divisors is an integer number (36915648).

Almost surely, 2^221422011 is an apocalyptic number.

221422011 is a deficient number, since it is larger than the sum of its proper divisors (73903173).

221422011 is a wasteful number, since it uses less digits than its factorization.

221422011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23961.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 221422011 is about 14880.2557437700. The cubic root of 221422011 is about 604.9789497036.

Adding to 221422011 its reverse (110224122), we get a palindrome (331646133).

The spelling of 221422011 in words is "two hundred twenty-one million, four hundred twenty-two thousand, eleven".