111011221011 has 8 divisors (see below), whose sum is σ = 148565203920. Its totient is φ = 73732359392.

The previous prime is 111011220989. The next prime is 111011221051. The reversal of 111011221011 is 110122110111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111011221011 - 2¹⁹ = 111010696723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111011221051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68779380 + ... + 68780993.

It is an arithmetic number, because the mean of its divisors is an integer number (18570650490).

Almost surely, 2^111011221011 is an apocalyptic number.

111011221011 is a deficient number, since it is larger than the sum of its proper divisors (37553982909).

111011221011 is a wasteful number, since it uses less digits than its factorization.

111011221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137560645.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111011221011 its reverse (110122110111), we get a palindrome (221133331122).

The spelling of 111011221011 in words is "one hundred eleven billion, eleven million, two hundred twenty-one thousand, eleven".