1223220010200 has 96 divisors (see below), whose sum is σ = 3795110408400. Its totient is φ = 325922895360.

The previous prime is 1223220010153. The next prime is 1223220010211. The reversal of 1223220010200 is 20100223221.

It is a happy number.

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 1223220010200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112555 + ... + 1568154.

Almost surely, 2^{1223220010200} is an apocalyptic number.

1223220010200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223220010200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1897555204200).

1223220010200 is an abundant number, since it is smaller than the sum of its proper divisors (2571890398200).

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

1223220010200 is a wasteful number, since it uses less digits than its factorization.

1223220010200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681941 (or 1681932 counting only the distinct ones).

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

Adding to 1223220010200 its reverse (20100223221), we get a palindrome (1243320233421).

The spelling of 1223220010200 in words is "one trillion, two hundred twenty-three billion, two hundred twenty million, ten thousand, two hundred".