111120221001 has 16 divisors (see below), whose sum is σ = 149840383680. Its totient is φ = 73240273920.

The previous prime is 111120220999. The next prime is 111120221077. The reversal of 111120221001 is 100122021111.

It is not a de Polignac number, because 111120221001 - 2¹ = 111120220999 is a prime.

It is a super-2 number, since 2×111120221001² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111120921001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4010686 + ... + 4038296.

It is an arithmetic number, because the mean of its divisors is an integer number (9365023980).

Almost surely, 2^111120221001 is an apocalyptic number.

It is an amenable number.

111120221001 is a deficient number, since it is larger than the sum of its proper divisors (38720162679).

111120221001 is a wasteful number, since it uses less digits than its factorization.

111120221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42776.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111120221001 its reverse (100122021111), we get a palindrome (211242242112).

The spelling of 111120221001 in words is "one hundred eleven billion, one hundred twenty million, two hundred twenty-one thousand, one".