1111020211211 has 8 divisors (see below), whose sum is σ = 1123047074064. Its totient is φ = 1099013479200.

The previous prime is 1111020211201. The next prime is 1111020211229. The reversal of 1111020211211 is 1121120201111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111020211211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111020211201) 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 7 ways as a sum of consecutive naturals, for example, 4921721 + ... + 5142506.

It is an arithmetic number, because the mean of its divisors is an integer number (140380884258).

Almost surely, 2^{1111020211211} is an apocalyptic number.

1111020211211 is a deficient number, since it is larger than the sum of its proper divisors (12026862853).

1111020211211 is a wasteful number, since it uses less digits than its factorization.

1111020211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10065421.

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

Adding to 1111020211211 its reverse (1121120201111), we get a palindrome (2232140412322).

It can be divided in two parts, 1111020 and 211211, that added together give a palindrome (1322231).

The spelling of 1111020211211 in words is "one trillion, one hundred eleven billion, twenty million, two hundred eleven thousand, two hundred eleven".