222221101 has 4 divisors (see below), whose sum is σ = 231882912. Its totient is φ = 212559292.

The previous prime is 222221071. The next prime is 222221137. The reversal of 222221101 is 101122222.

It is a happy number.

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 222221101 - 2¹³ = 222212909 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 (222221201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4830871 + ... + 4830916.

It is an arithmetic number, because the mean of its divisors is an integer number (57970728).

Almost surely, 2^222221101 is an apocalyptic number.

It is an amenable number.

222221101 is a deficient number, since it is larger than the sum of its proper divisors (9661811).

222221101 is an equidigital number, since it uses as much as digits as its factorization.

222221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9661810.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 222221101 is about 14907.0822430146. The cubic root of 222221101 is about 605.7058455777.

Adding to 222221101 its reverse (101122222), we get a palindrome (323343323).

The spelling of 222221101 in words is "two hundred twenty-two million, two hundred twenty-one thousand, one hundred one".