111201212101011 has 16 divisors (see below), whose sum is σ = 148372848928128. Its totient is φ = 74081859984000.

The previous prime is 111201212100943. The next prime is 111201212101027. The reversal of 111201212101011 is 110101212102111.

It is not a de Polignac number, because 111201212101011 - 2³⁴ = 111184032231827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111201212101081) 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, 333103200 + ... + 333436866.

It is an arithmetic number, because the mean of its divisors is an integer number (9273303058008).

Almost surely, 2^{111201212101011} is an apocalyptic number.

111201212101011 is a deficient number, since it is larger than the sum of its proper divisors (37171636827117).

111201212101011 is a wasteful number, since it uses less digits than its factorization.

111201212101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411682.

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

Adding to 111201212101011 its reverse (110101212102111), we get a palindrome (221302424203122).

It can be divided in two parts, 111201 and 212101011, that added together give a palindrome (212212212).

The spelling of 111201212101011 in words is "one hundred eleven trillion, two hundred one billion, two hundred twelve million, one hundred one thousand, eleven".