1331221200404 has 12 divisors (see below), whose sum is σ = 2329704772500. Its totient is φ = 665591265408.

The previous prime is 1331221200403. The next prime is 1331221200451. The reversal of 1331221200404 is 4040021221331.

It can be written as a sum of positive squares in 2 ways, for example, as 1292309692804 + 38911507600 = 1136798^2 + 197260^2 .

It is a super-3 number, since 3×1331221200404³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1331221200404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331221200403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4678229 + ... + 4954620.

It is an arithmetic number, because the mean of its divisors is an integer number (194142064375).

Almost surely, 2^{1331221200404} is an apocalyptic number.

It is an amenable number.

1331221200404 is a deficient number, since it is larger than the sum of its proper divisors (998483572096).

1331221200404 is a wasteful number, since it uses less digits than its factorization.

1331221200404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9667402 (or 9667400 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1331221200404 its reverse (4040021221331), we get a palindrome (5371242421735).

The spelling of 1331221200404 in words is "one trillion, three hundred thirty-one billion, two hundred twenty-one million, two hundred thousand, four hundred four".