1222200111 has 16 divisors (see below), whose sum is σ = 1781262720. Its totient is φ = 739261920.

The previous prime is 1222200103. The next prime is 1222200113. The reversal of 1222200111 is 1110022221.

1222200111 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1222200111 - 2³ = 1222200103 is a prime.

It is a super-2 number, since 2×1222200111² = 2987546222656824642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222200113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19585 + ... + 53178.

It is an arithmetic number, because the mean of its divisors is an integer number (111328920).

Almost surely, 2^1222200111 is an apocalyptic number.

1222200111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222200111 is a deficient number, since it is larger than the sum of its proper divisors (559062609).

1222200111 is a wasteful number, since it uses less digits than its factorization.

1222200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73286.

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

The square root of 1222200111 is about 34959.9787042269. The cubic root of 1222200111 is about 1069.1716624593.

Adding to 1222200111 its reverse (1110022221), we get a palindrome (2332222332).

The spelling of 1222200111 in words is "one billion, two hundred twenty-two million, two hundred thousand, one hundred eleven".