11001203220311 has 4 divisors (see below), whose sum is σ = 11013950849472. Its totient is φ = 10988455591152.

The previous prime is 11001203220233. The next prime is 11001203220313. The reversal of 11001203220311 is 11302230210011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11001203220311 is a prime.

It is a super-2 number, since 2×11001203220311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11001203220311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001203220313) 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, 6373813286 + ... + 6373815011.

It is an arithmetic number, because the mean of its divisors is an integer number (2753487712368).

Almost surely, 2^{11001203220311} is an apocalyptic number.

11001203220311 is a deficient number, since it is larger than the sum of its proper divisors (12747629161).

11001203220311 is an equidigital number, since it uses as much as digits as its factorization.

11001203220311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12747629160.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11001203220311 its reverse (11302230210011), we get a palindrome (22303433430322).

The spelling of 11001203220311 in words is "eleven trillion, one billion, two hundred three million, two hundred twenty thousand, three hundred eleven".