1222102111 has 2 divisors, whose sum is σ = 1222102112. Its totient is φ = 1222102110.

The previous prime is 1222102109. The next prime is 1222102139. The reversal of 1222102111 is 1112012221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222102111 - 2¹ = 1222102109 is a prime.

Together with 1222102109, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1222102091 and 1222102100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222102151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611051055 + 611051056.

It is an arithmetic number, because the mean of its divisors is an integer number (611051056).

Almost surely, 2^1222102111 is an apocalyptic number.

1222102111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222102111 is an equidigital number, since it uses as much as digits as its factorization.

1222102111 is an evil number, because the sum of its binary digits is even.

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

The square root of 1222102111 is about 34958.5770734451. The cubic root of 1222102111 is about 1069.1430851359.

Adding to 1222102111 its reverse (1112012221), we get a palindrome (2334114332).

The spelling of 1222102111 in words is "one billion, two hundred twenty-two million, one hundred two thousand, one hundred eleven".