1223222200 has 24 divisors (see below), whose sum is σ = 2843992080. Its totient is φ = 489288800.

The previous prime is 1223222191. The next prime is 1223222207. The reversal of 1223222200 is 22223221.

It is a super-3 number, since 3×1223222200³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223222207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3057856 + ... + 3058255.

It is an arithmetic number, because the mean of its divisors is an integer number (118499670).

Almost surely, 2^1223222200 is an apocalyptic number.

1223222200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223222200 is an abundant number, since it is smaller than the sum of its proper divisors (1620769880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223222200 is a wasteful number, since it uses less digits than its factorization.

1223222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6116127 (or 6116118 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1223222200 is about 34974.5936359524. The cubic root of 1223222200 is about 1069.4696180628.

Adding to 1223222200 its reverse (22223221), we get a palindrome (1245445421).

It can be divided in two parts, 122322 and 2200, that multiplied together give a triangular number (269108400 = T₂₃₁₉₉).

The spelling of 1223222200 in words is "one billion, two hundred twenty-three million, two hundred twenty-two thousand, two hundred".