1123212220200 has 384 divisors, whose sum is σ = 4504967020800. Its totient is φ = 251889730560.

The previous prime is 1123212220199. The next prime is 1123212220211. The reversal of 1123212220200 is 20222123211.

1123212220200 is a `hidden beast` number, since 1 + 1 + 232 + 12 + 220 + 200 = 666.

It is a super-2 number, since 2×1123212220200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 1723074 + ... + 2283726.

It is an arithmetic number, because the mean of its divisors is an integer number (11731684950).

Almost surely, 2^{1123212220200} is an apocalyptic number.

1123212220200 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 1123212220200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2252483510400).

1123212220200 is an abundant number, since it is smaller than the sum of its proper divisors (3381754800600).

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

1123212220200 is a wasteful number, since it uses less digits than its factorization.

1123212220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560738 (or 560723 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1123212220200 its reverse (20222123211), we get a palindrome (1143434343411).

The spelling of 1123212220200 in words is "one trillion, one hundred twenty-three billion, two hundred twelve million, two hundred twenty thousand, two hundred".