1321133231100 has 36 divisors (see below), whose sum is σ = 3822478816184. Its totient is φ = 352302194880.

The previous prime is 1321133231059. The next prime is 1321133231123. The reversal of 1321133231100 is 11323311231.

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, 2201888419 + ... + 2201889018.

Almost surely, 2^{1321133231100} is an apocalyptic number.

1321133231100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321133231100 is an abundant number, since it is smaller than the sum of its proper divisors (2501345585084).

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

1321133231100 is a wasteful number, since it uses less digits than its factorization.

1321133231100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4403777454 (or 4403777447 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1321133231100 its reverse (11323311231), we get a palindrome (1332456542331).

The spelling of 1321133231100 in words is "one trillion, three hundred twenty-one billion, one hundred thirty-three million, two hundred thirty-one thousand, one hundred".