1223122200 has 48 divisors (see below), whose sum is σ = 3791680680. Its totient is φ = 326165760.

The previous prime is 1223122177. The next prime is 1223122211. The reversal of 1223122200 is 22213221.

It is a happy number.

It is a super-2 number, since 2×1223122200² = 2992055832265680000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1223122200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1018669 + ... + 1019868.

Almost surely, 2^1223122200 is an apocalyptic number.

1223122200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223122200 is an abundant number, since it is smaller than the sum of its proper divisors (2568558480).

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

1223122200 is a wasteful number, since it uses less digits than its factorization.

1223122200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038556 (or 2038547 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1223122200 is about 34973.1639975568. The cubic root of 1223122200 is about 1069.4404737595.

Adding to 1223122200 its reverse (22213221), we get a palindrome (1245335421).

The spelling of 1223122200 in words is "one billion, two hundred twenty-three million, one hundred twenty-two thousand, two hundred".