1222120430400 has 168 divisors, whose sum is σ = 4077533262240. Its totient is φ = 320374999040.

The previous prime is 1222120430369. The next prime is 1222120430429. The reversal of 1222120430400 is 40340212221.

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 23 ways as a sum of consecutive naturals, for example, 1874499 + ... + 2440898.

Almost surely, 2^{1222120430400} is an apocalyptic number.

1222120430400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222120430400 is an abundant number, since it is smaller than the sum of its proper divisors (2855412831840).

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

1222120430400 is a wasteful number, since it uses less digits than its factorization.

1222120430400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4315481 (or 4315466 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 1222120430400 its reverse (40340212221), we get a palindrome (1262460642621).

The spelling of 1222120430400 in words is "one trillion, two hundred twenty-two billion, one hundred twenty million, four hundred thirty thousand, four hundred".