11020111212311 has 4 divisors (see below), whose sum is σ = 11123102905992. Its totient is φ = 10917119518632.

The previous prime is 11020111212287. The next prime is 11020111212373. The reversal of 11020111212311 is 11321211102011.

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-11020111212311 is a prime.

It is a super-2 number, since 2×11020111212311² (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 11020111212311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020111232311) 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, 51495846680 + ... + 51495846893.

It is an arithmetic number, because the mean of its divisors is an integer number (2780775726498).

Almost surely, 2^{11020111212311} is an apocalyptic number.

11020111212311 is a deficient number, since it is larger than the sum of its proper divisors (102991693681).

11020111212311 is a wasteful number, since it uses less digits than its factorization.

11020111212311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102991693680.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 11020111212311 its reverse (11321211102011), we get a palindrome (22341322314322).

The spelling of 11020111212311 in words is "eleven trillion, twenty billion, one hundred eleven million, two hundred twelve thousand, three hundred eleven".