1222210111 has 8 divisors (see below), whose sum is σ = 1225737360. Its totient is φ = 1218689472.

The previous prime is 1222210097. The next prime is 1222210127. The reversal of 1222210111 is 1110122221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222210111 - 2⁷ = 1222209983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222210091 and 1222210100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222210151) 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 7 ways as a sum of consecutive naturals, for example, 817881 + ... + 819373.

It is an arithmetic number, because the mean of its divisors is an integer number (153217170).

Almost surely, 2^1222210111 is an apocalyptic number.

1222210111 is a deficient number, since it is larger than the sum of its proper divisors (3527249).

1222210111 is an equidigital number, since it uses as much as digits as its factorization.

1222210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1222210111 is about 34960.1217246165. The cubic root of 1222210111 is about 1069.1745784268.

Adding to 1222210111 its reverse (1110122221), we get a palindrome (2332332332).

The spelling of 1222210111 in words is "one billion, two hundred twenty-two million, two hundred ten thousand, one hundred eleven".