11012101321 has 4 divisors (see below), whose sum is σ = 11859186052. Its totient is φ = 10165016592.

The previous prime is 11012101313. The next prime is 11012101333. The reversal of 11012101321 is 12310121011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1020099721 + 9992001600 = 31939^2 + 99960^2 .

It is a cyclic number.

It is not a de Polignac number, because 11012101321 - 2³ = 11012101313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 847084717 = 11012101321 / (1 + 1 + 0 + 1 + 2 + 1 + 0 + 1 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012101021) 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, 423542346 + ... + 423542371.

It is an arithmetic number, because the mean of its divisors is an integer number (2964796513).

Almost surely, 2^11012101321 is an apocalyptic number.

It is an amenable number.

11012101321 is a deficient number, since it is larger than the sum of its proper divisors (847084731).

11012101321 is an equidigital number, since it uses as much as digits as its factorization.

11012101321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847084730.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11012101321 its reverse (12310121011), we get a palindrome (23322222332).

The spelling of 11012101321 in words is "eleven billion, twelve million, one hundred one thousand, three hundred twenty-one".