11111020202111 has 16 divisors (see below), whose sum is σ = 11608350516000. Its totient is φ = 10621309776000.

The previous prime is 11111020202057. The next prime is 11111020202143. The reversal of 11111020202111 is 11120202011111.

It is a cyclic number.

It is not a de Polignac number, because 11111020202111 - 2¹⁸ = 11111019939967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111020222111) 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, 141428501 + ... + 141507041.

It is an arithmetic number, because the mean of its divisors is an integer number (725521907250).

Almost surely, 2^{11111020202111} is an apocalyptic number.

11111020202111 is a deficient number, since it is larger than the sum of its proper divisors (497330313889).

11111020202111 is a wasteful number, since it uses less digits than its factorization.

11111020202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126970.

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

Adding to 11111020202111 its reverse (11120202011111), we get a palindrome (22231222213222).

The spelling of 11111020202111 in words is "eleven trillion, one hundred eleven billion, twenty million, two hundred two thousand, one hundred eleven".