111201120020111 has 16 divisors (see below), whose sum is σ = 121502135973888. Its totient is φ = 100932085744800.

The previous prime is 111201120020093. The next prime is 111201120020143. The reversal of 111201120020111 is 111020021102111.

It is a cyclic number.

It is not a de Polignac number, because 111201120020111 - 2⁶ = 111201120020047 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 (111201120026111) 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, 210848201 + ... + 211374941.

It is an arithmetic number, because the mean of its divisors is an integer number (7593883498368).

Almost surely, 2^{111201120020111} is an apocalyptic number.

111201120020111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111201120020111 is a deficient number, since it is larger than the sum of its proper divisors (10301015953777).

111201120020111 is a wasteful number, since it uses less digits than its factorization.

111201120020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557062.

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

Adding to 111201120020111 its reverse (111020021102111), we get a palindrome (222221141122222).

The spelling of 111201120020111 in words is "one hundred eleven trillion, two hundred one billion, one hundred twenty million, twenty thousand, one hundred eleven".