1200331122400 has 72 divisors (see below), whose sum is σ = 2931007262904. Its totient is φ = 480017932800.

The previous prime is 1200331122383. The next prime is 1200331122413. The reversal of 1200331122400 is 42211330021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3217590 + ... + 3571210.

It is an arithmetic number, because the mean of its divisors is an integer number (40708434207).

Almost surely, 2^{1200331122400} is an apocalyptic number.

1200331122400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200331122400 is an abundant number, since it is smaller than the sum of its proper divisors (1730676140504).

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

1200331122400 is a wasteful number, since it uses less digits than its factorization.

1200331122400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357884 (or 357871 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1200331122400 its reverse (42211330021), we get a palindrome (1242542452421).

The spelling of 1200331122400 in words is "one trillion, two hundred billion, three hundred thirty-one million, one hundred twenty-two thousand, four hundred".