111220211001 has 8 divisors (see below), whose sum is σ = 157016768544. Its totient is φ = 69785230400.

The previous prime is 111220210999. The next prime is 111220211041. The reversal of 111220211001 is 100112022111.

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 111220211001 - 2¹ = 111220210999 is a prime.

It is a super-2 number, since 2×111220211001² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111220211041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1090394175 + ... + 1090394276.

It is an arithmetic number, because the mean of its divisors is an integer number (19627096068).

Almost surely, 2^111220211001 is an apocalyptic number.

It is an amenable number.

111220211001 is a deficient number, since it is larger than the sum of its proper divisors (45796557543).

111220211001 is a wasteful number, since it uses less digits than its factorization.

111220211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180788471.

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

Adding to 111220211001 its reverse (100112022111), we get a palindrome (211332233112).

The spelling of 111220211001 in words is "one hundred eleven billion, two hundred twenty million, two hundred eleven thousand, one".