64222211 has 4 divisors (see below), whose sum is σ = 66436800. Its totient is φ = 62007624.

The previous prime is 64222199. The next prime is 64222217. The reversal of 64222211 is 11222246.

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 64222211 - 2¹⁰ = 64221187 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (64222217) 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, 1107251 + ... + 1107308.

It is an arithmetic number, because the mean of its divisors is an integer number (16609200).

Almost surely, 2^64222211 is an apocalyptic number.

64222211 is a deficient number, since it is larger than the sum of its proper divisors (2214589).

64222211 is a wasteful number, since it uses less digits than its factorization.

64222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2214588.

The product of its digits is 384, while the sum is 20.

The square root of 64222211 is about 8013.8761532731. The cubic root of 64222211 is about 400.4624048318.

Adding to 64222211 its reverse (11222246), we get a palindrome (75444457).

The spelling of 64222211 in words is "sixty-four million, two hundred twenty-two thousand, two hundred eleven".