111211220001011 has 12 divisors (see below), whose sum is σ = 120424282587000. Its totient is φ = 102656256056640.

The previous prime is 111211220001001. The next prime is 111211220001047. The reversal of 111211220001011 is 110100022112111.

It is a de Polignac number, because none of the positive numbers 2^k-111211220001011 is a prime.

It is a super-2 number, since 2×111211220001011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111211220001001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121991615 + ... + 122899863.

It is an arithmetic number, because the mean of its divisors is an integer number (10035356882250).

Almost surely, 2^{111211220001011} is an apocalyptic number.

111211220001011 is a deficient number, since it is larger than the sum of its proper divisors (9213062585989).

111211220001011 is an equidigital number, since it uses as much as digits as its factorization.

111211220001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632806 (or 1632793 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111211220001011 its reverse (110100022112111), we get a palindrome (221311242113122).

The spelling of 111211220001011 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred twenty million, one thousand, eleven".