111021212111011 has 16 divisors (see below), whose sum is σ = 111617935783200. Its totient is φ = 110426117310208.

The previous prime is 111021212110999. The next prime is 111021212111041. The reversal of 111021212111011 is 110111212120111.

It is a cyclic number.

It is not a de Polignac number, because 111021212111011 - 2⁵ = 111021212110979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111021212111041) 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, 445713375 + ... + 445962391.

It is an arithmetic number, because the mean of its divisors is an integer number (6976120986450).

Almost surely, 2^{111021212111011} is an apocalyptic number.

111021212111011 is a deficient number, since it is larger than the sum of its proper divisors (596723672189).

111021212111011 is a wasteful number, since it uses less digits than its factorization.

111021212111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252278.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 111021212111011 its reverse (110111212120111), we get a palindrome (221132424231122).

The spelling of 111021212111011 in words is "one hundred eleven trillion, twenty-one billion, two hundred twelve million, one hundred eleven thousand, eleven".