1321110323100 has 54 divisors (see below), whose sum is σ = 4140946915560. Its totient is φ = 352296085920.

The previous prime is 1321110323087. The next prime is 1321110323161. The reversal of 1321110323100 is 13230111231.

1321110323100 is a `hidden beast` number, since 1 + 321 + 1 + 1 + 0 + 32 + 310 + 0 = 666.

It is a super-2 number, since 2×1321110323100² (a number of 25 digits) contains 22 as substring.

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 polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 733949280 + ... + 733951079.

It is an arithmetic number, because the mean of its divisors is an integer number (76684202140).

Almost surely, 2^{1321110323100} is an apocalyptic number.

1321110323100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321110323100 is an abundant number, since it is smaller than the sum of its proper divisors (2819836592460).

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

1321110323100 is a wasteful number, since it uses less digits than its factorization.

1321110323100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467900379 (or 1467900369 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1321110323100 its reverse (13230111231), we get a palindrome (1334340434331).

The spelling of 1321110323100 in words is "one trillion, three hundred twenty-one billion, one hundred ten million, three hundred twenty-three thousand, one hundred".