1222002111 has 24 divisors (see below), whose sum is σ = 1812545280. Its totient is φ = 731666320.

The previous prime is 1222002107. The next prime is 1222002137. The reversal of 1222002111 is 1112002221.

It is not a de Polignac number, because 1222002111 - 2² = 1222002107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222002181) 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 23 ways as a sum of consecutive naturals, for example, 9850 + ... + 50408.

It is an arithmetic number, because the mean of its divisors is an integer number (75522720).

Almost surely, 2^1222002111 is an apocalyptic number.

1222002111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222002111 is a deficient number, since it is larger than the sum of its proper divisors (590543169).

1222002111 is a wasteful number, since it uses less digits than its factorization.

1222002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40667 (or 40656 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1222002111 is about 34957.1467800220. The cubic root of 1222002111 is about 1069.1139230270.

Adding to 1222002111 its reverse (1112002221), we get a palindrome (2334004332).

The spelling of 1222002111 in words is "one billion, two hundred twenty-two million, two thousand, one hundred eleven".