111201022011111 has 4 divisors (see below), whose sum is σ = 148268029348152. Its totient is φ = 74134014674072.

The previous prime is 111201022011097. The next prime is 111201022011119. The reversal of 111201022011111 is 111110220102111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111201022011111 - 2¹⁰ = 111201022010087 is a prime.

It is a super-2 number, since 2×111201022011111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201022011119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18533503668516 + ... + 18533503668521.

It is an arithmetic number, because the mean of its divisors is an integer number (37067007337038).

Almost surely, 2^{111201022011111} is an apocalyptic number.

111201022011111 is a deficient number, since it is larger than the sum of its proper divisors (37067007337041).

111201022011111 is an equidigital number, since it uses as much as digits as its factorization.

111201022011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37067007337040.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111201022011111 its reverse (111110220102111), we get a palindrome (222311242113222).

The spelling of 111201022011111 in words is "one hundred eleven trillion, two hundred one billion, twenty-two million, eleven thousand, one hundred eleven".