1213332122200 has 144 divisors (see below), whose sum is σ = 3117011748480. Its totient is φ = 438900000000.

The previous prime is 1213332122179. The next prime is 1213332122203. The reversal of 1213332122200 is 22212333121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213332122203) 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 35 ways as a sum of consecutive naturals, for example, 4490950 + ... + 4753450.

It is an arithmetic number, because the mean of its divisors is an integer number (21645914920).

Almost surely, 2^{1213332122200} is an apocalyptic number.

1213332122200 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 1213332122200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1558505874240).

1213332122200 is an abundant number, since it is smaller than the sum of its proper divisors (1903679626280).

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

1213332122200 is a wasteful number, since it uses less digits than its factorization.

1213332122200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262730 (or 262710 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1213332122200 its reverse (22212333121), we get a palindrome (1235544455321).

The spelling of 1213332122200 in words is "one trillion, two hundred thirteen billion, three hundred thirty-two million, one hundred twenty-two thousand, two hundred".