1321100104 has 32 divisors (see below), whose sum is σ = 2600755200. Its totient is φ = 628246080.

The previous prime is 1321100087. The next prime is 1321100113. The reversal of 1321100104 is 4010011231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26952 + ... + 58039.

It is an arithmetic number, because the mean of its divisors is an integer number (81273600).

Almost surely, 2^1321100104 is an apocalyptic number.

It is an amenable number.

1321100104 is a deficient number, since it is larger than the sum of its proper divisors (1279655096).

1321100104 is a wasteful number, since it uses less digits than its factorization.

1321100104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85093 (or 85089 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1321100104 is about 36346.9407791082. The cubic root of 1321100104 is about 1097.2659661518.

Adding to 1321100104 its reverse (4010011231), we get a palindrome (5331111335).

The spelling of 1321100104 in words is "one billion, three hundred twenty-one million, one hundred thousand, one hundred four".