1222222201200 has 2880 divisors, whose sum is σ = 6136491239424. Its totient is φ = 216760320000.

The previous prime is 1222222201141. The next prime is 1222222201223. The reversal of 1222222201200 is 21022222221.

1222222201200 is a `hidden beast` number, since 1 + 22 + 222 + 220 + 1 + 200 = 666.

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

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

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 575 ways as a sum of consecutive naturals, for example, 4349545060 + ... + 4349545340.

Almost surely, 2^{1222222201200} is an apocalyptic number.

1222222201200 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 1222222201200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3068245619712).

1222222201200 is an abundant number, since it is smaller than the sum of its proper divisors (4914269038224).

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

1222222201200 is a wasteful number, since it uses less digits than its factorization.

1222222201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1222222201200 its reverse (21022222221), we get a palindrome (1243244423421).

The spelling of 1222222201200 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred one thousand, two hundred".