221112220111 has 8 divisors (see below), whose sum is σ = 246440864880. Its totient is φ = 197152691328.

The previous prime is 221112220099. The next prime is 221112220127. The reversal of 221112220111 is 111022211122.

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 221112220111 - 2¹⁵ = 221112187343 is a prime.

It is a super-2 number, since 2×221112220111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112220151) 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, 342278656 + ... + 342279301.

It is an arithmetic number, because the mean of its divisors is an integer number (30805108110).

Almost surely, 2^221112220111 is an apocalyptic number.

221112220111 is a deficient number, since it is larger than the sum of its proper divisors (25328644769).

221112220111 is a wasteful number, since it uses less digits than its factorization.

221112220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684557993.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221112220111 its reverse (111022211122), we get a palindrome (332134431233).

The spelling of 221112220111 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred twenty thousand, one hundred eleven".