1222121302200 has 144 divisors (see below), whose sum is σ = 4320306127800. Its totient is φ = 308746425600.

The previous prime is 1222121302187. The next prime is 1222121302271. The reversal of 1222121302200 is 22031212221.

1222121302200 is a `hidden beast` number, since 1 + 222 + 121 + 302 + 20 + 0 = 666.

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

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 35 ways as a sum of consecutive naturals, for example, 17833071 + ... + 17901470.

Almost surely, 2^{1222121302200} is an apocalyptic number.

1222121302200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222121302200 is an abundant number, since it is smaller than the sum of its proper divisors (3098184825600).

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

1222121302200 is a wasteful number, since it uses less digits than its factorization.

1222121302200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35734582 (or 35734570 counting only the distinct ones).

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

Adding to 1222121302200 its reverse (22031212221), we get a palindrome (1244152514421).

The spelling of 1222121302200 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, three hundred two thousand, two hundred".