1223312122200 has 384 divisors, whose sum is σ = 4653615006720. Its totient is φ = 259458662400.

The previous prime is 1223312122187. The next prime is 1223312122211. The reversal of 1223312122200 is 22212133221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4948744 + ... + 5190056.

It is an arithmetic number, because the mean of its divisors is an integer number (12118789080).

Almost surely, 2^{1223312122200} is an apocalyptic number.

1223312122200 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 1223312122200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2326807503360).

1223312122200 is an abundant number, since it is smaller than the sum of its proper divisors (3430302884520).

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

1223312122200 is a wasteful number, since it uses less digits than its factorization.

1223312122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241427 (or 241418 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1223312122200 its reverse (22212133221), we get a palindrome (1245524255421).

The spelling of 1223312122200 in words is "one trillion, two hundred twenty-three billion, three hundred twelve million, one hundred twenty-two thousand, two hundred".