1100001011321 has 16 divisors (see below), whose sum is σ = 1185554979840. Its totient is φ = 1017631200960.

The previous prime is 1100001011279. The next prime is 1100001011419. The reversal of 1100001011321 is 1231101000011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1100001011321 - 2³⁰ = 1098927269497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1100001010321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 751475 + ... + 1662743.

It is an arithmetic number, because the mean of its divisors is an integer number (74097186240).

Almost surely, 2^{1100001011321} is an apocalyptic number.

It is an amenable number.

1100001011321 is a deficient number, since it is larger than the sum of its proper divisors (85553968519).

1100001011321 is a wasteful number, since it uses less digits than its factorization.

1100001011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913016.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 1100001011321 its reverse (1231101000011), we get a palindrome (2331102011332).

The spelling of 1100001011321 in words is "one trillion, one hundred billion, one million, eleven thousand, three hundred twenty-one".