111221201102011 has 64 divisors (see below), whose sum is σ = 150826689570816. Its totient is φ = 79198689024000.

The previous prime is 111221201102003. The next prime is 111221201102027. The reversal of 111221201102011 is 110201102122111.

It is not a de Polignac number, because 111221201102011 - 2³ = 111221201102003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111221201102051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1030468530 + ... + 1030576456.

It is an arithmetic number, because the mean of its divisors is an integer number (2356667024544).

Almost surely, 2^{111221201102011} is an apocalyptic number.

111221201102011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111221201102011 is a deficient number, since it is larger than the sum of its proper divisors (39605488468805).

111221201102011 is a wasteful number, since it uses less digits than its factorization.

111221201102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118252.

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

Adding to 111221201102011 its reverse (110201102122111), we get a palindrome (221422303224122).

It can be divided in two parts, 111 and 221201102011, that added together give a palindrome (221201102122).

The spelling of 111221201102011 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred one million, one hundred two thousand, eleven".