11203101221321 has 4 divisors (see below), whose sum is σ = 11203541395332. Its totient is φ = 11202661047312.

The previous prime is 11203101221231. The next prime is 11203101221359. The reversal of 11203101221321 is 12312210130211.

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 8996034436921 + 2207066784400 = 2999339^2 + 1485620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11203101221321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11203101221293 and 11203101221302.

It is not an unprimeable number, because it can be changed into a prime (11203101281321) 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, 220048826 + ... + 220099731.

It is an arithmetic number, because the mean of its divisors is an integer number (2800885348833).

Almost surely, 2^{11203101221321} is an apocalyptic number.

It is an amenable number.

11203101221321 is a deficient number, since it is larger than the sum of its proper divisors (440174011).

11203101221321 is an equidigital number, since it uses as much as digits as its factorization.

11203101221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440174010.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 11203101221321 its reverse (12312210130211), we get a palindrome (23515311351532).

The spelling of 11203101221321 in words is "eleven trillion, two hundred three billion, one hundred one million, two hundred twenty-one thousand, three hundred twenty-one".