11203123220101 has 4 divisors (see below), whose sum is σ = 11215753574112. Its totient is φ = 11190492866092.

The previous prime is 11203123220099. The next prime is 11203123220153. The reversal of 11203123220101 is 10102232130211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11203123220101 - 2¹ = 11203123220099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203123220501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6315175675 + ... + 6315177448.

It is an arithmetic number, because the mean of its divisors is an integer number (2803938393528).

Almost surely, 2^{11203123220101} is an apocalyptic number.

It is an amenable number.

11203123220101 is a deficient number, since it is larger than the sum of its proper divisors (12630354011).

11203123220101 is an equidigital number, since it uses as much as digits as its factorization.

11203123220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12630354010.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11203123220101 its reverse (10102232130211), we get a palindrome (21305355350312).

The spelling of 11203123220101 in words is "eleven trillion, two hundred three billion, one hundred twenty-three million, two hundred twenty thousand, one hundred one".