11020211220111 has 16 divisors (see below), whose sum is σ = 14971027275360. Its totient is φ = 7208104550400.

The previous prime is 11020211220107. The next prime is 11020211220199. The reversal of 11020211220111 is 11102211202011.

It is a happy number.

It is not a de Polignac number, because 11020211220111 - 2² = 11020211220107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020211221111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15184311 + ... + 15893511.

It is an arithmetic number, because the mean of its divisors is an integer number (935689204710).

Almost surely, 2^{11020211220111} is an apocalyptic number.

11020211220111 is a deficient number, since it is larger than the sum of its proper divisors (3950816055249).

11020211220111 is an equidigital number, since it uses as much as digits as its factorization.

11020211220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806986.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11020211220111 its reverse (11102211202011), we get a palindrome (22122422422122).

The spelling of 11020211220111 in words is "eleven trillion, twenty billion, two hundred eleven million, two hundred twenty thousand, one hundred eleven".