2210427221 has 4 divisors (see below), whose sum is σ = 2214298944. Its totient is φ = 2206555500.

The previous prime is 2210427211. The next prime is 2210427257. The reversal of 2210427221 is 1227240122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2210427221 - 2¹⁸ = 2210165077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210427211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1935005 + ... + 1936146.

It is an arithmetic number, because the mean of its divisors is an integer number (553574736).

Almost surely, 2^2210427221 is an apocalyptic number.

It is an amenable number.

2210427221 is a deficient number, since it is larger than the sum of its proper divisors (3871723).

2210427221 is an equidigital number, since it uses as much as digits as its factorization.

2210427221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871722.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 2210427221 is about 47015.1807504768. The cubic root of 2210427221 is about 1302.6429900379.

Adding to 2210427221 its reverse (1227240122), we get a palindrome (3437667343).

The spelling of 2210427221 in words is "two billion, two hundred ten million, four hundred twenty-seven thousand, two hundred twenty-one".