221022001111 has 16 divisors (see below), whose sum is σ = 235534176000. Its totient is φ = 206678521728.

The previous prime is 221022001103. The next prime is 221022001117. The reversal of 221022001111 is 111100220122.

It is a cyclic number.

It is not a de Polignac number, because 221022001111 - 2³ = 221022001103 is a prime.

It is a super-2 number, since 2×221022001111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221022001091 and 221022001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221022001117) 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 15 ways as a sum of consecutive naturals, for example, 10128190 + ... + 10149988.

It is an arithmetic number, because the mean of its divisors is an integer number (14720886000).

Almost surely, 2^221022001111 is an apocalyptic number.

221022001111 is a deficient number, since it is larger than the sum of its proper divisors (14512174889).

221022001111 is a wasteful number, since it uses less digits than its factorization.

221022001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25638.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221022001111 its reverse (111100220122), we get a palindrome (332122221233).

The spelling of 221022001111 in words is "two hundred twenty-one billion, twenty-two million, one thousand, one hundred eleven".